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Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100 (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100m (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100m (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig) -
Dolomite
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
67x60mm (Author: jordanlowe1089) -
Dolomite
Magnesite deposit, Sunk, Niedere Tauern, Styria/Steiermark, Austria
95 mm (Author: Gerhard Brandstetter) -
Dolomite
Picher Field, Tri-State District, Ottawa County, Oklahoma, USA
125 X 70 X 90 mm (Author: Robert Seitz) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.4 x 8.0 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
35mmx18mm (Author: Heimo Hellwig) -
Dolomite
Azcárate Quarry, Eugui, EsterÃbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
142 X 105 mm (Author: Manuel Mesa) -
Dolomite
Timmins area, Cochrane District, Ontario, Canada
1.8 x 2.3 cm (Author: crosstimber) -
Dolomite
Azcárate Quarry, Eugui, EsterÃbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
72 x 47 mm (Author: Manuel Mesa) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.0 x 8.7 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.0 x 8.7 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.9 x 6.8 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.9 x 6.8 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
4.0 x 4.5 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber) -
Dolomite
Lake Meredith, Sanford, Texas Panhandle, Texas, USA
15x12x11cm (Author: Dale Hallmark) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70mm x 52mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70mm x 52mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
62mm x 64mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
62mm x 64mm (Author: Heimo Hellwig) -
Dolomite
Asturreta Quarry, Eugui, EsterÃbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
8 x 8 x 7 cm (Author: James) -
Dolomite
Bautenberg Mine, Wilden, Wilnsdorf, Siegen-Wittgenstein District, Arnsberg, Rhineland-Palatinate/Rheinland-Pfalz, Germany
7 x 4,5 cm (Author: Andreas Gerstenberg) -
Dolomite
Glücksbrunn, Schweina, Bad Liebenstein, Wartburgkreis District, Thuringia/Thüringen, Germany
7 x 6 cm (Author: Andreas Gerstenberg) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
74mm x 40mm x 26mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
97mm x 105mm x 18mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
97mm x 105mm x 18mm (Author: Heimo Hellwig) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
72mm x 58mm x 10mm (Author: Heimo Hellwig) -
Dolomite
Huanggang Mines, Hexigten Banner (KèshÃkèténg QÃ), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China
9x9x7 cm (Author: Joseph DOliveira) -
Dolomite
Bou Beker, Touissit-Bou Beker mining district, Jerada Province, Oriental Region, Morocco
8 cm. x 7 cm. (Author: Enrique Llorens) -
Dolomite
Red Cloud Mine, Rush Creek District, Marion County, Arkansas, USA
80 mm x 70 mm x 40 mm (Author: Don Lum) -
Dolomite
Walser Quarry, Silz, Imst District, North Tyrol, Tyrol/Tirol, Austria
8 x 6 cm (Author: Volkmar Stingl) -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-Württemberg, Germany
12 x 10 cm (Author: Volkmar Stingl) -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-Württemberg, Germany
12 x 10 cm (Author: Volkmar Stingl) -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-Württemberg, Germany
7,5 x 5 cm (Author: Volkmar Stingl) -
Dolomite
El Almendral Quarry, Road to Berja, Berja, Comarca Poniente Almeriense, AlmerÃa, Andalusia, Spain
105mm x 110mm x 70mm (Author: Firmo Espinar) -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-Württemberg, Germany
5 x 4,5 cm (Author: Volkmar Stingl) -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-Württemberg, Germany
5 x 4,5 cm (Author: Volkmar Stingl) -
Dolomite
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
2.8x3.2x2 cm''s (Author: Joseph DOliveira) -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
3.8 x 2.7 cm (Author: Michael Shaw) -
Dolomite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
8 x 7 cm (Author: Volkmar Stingl) -
Dolomite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
8 x 7 cm (Author: Volkmar Stingl) -
Dolostone and silica. (Author: vic rzonca)
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Don’t laugh - it took hours panning in a stream to get this speck of Gold -got eaten alive by Bulgarian Mozzies....... (Author: Colleen Thomson)
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Donnayite-(Y)
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=4mm (Author: Doug)
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Donnayite-(Y)
Semmering basis tunnel, Gloggnitz, Neunkirchen District, Lower Austria/Niederösterreich, Austria
FoV ca. 1 x 1,5 cm (Author: Volkmar Stingl) -
Double geode of azurite/malachite (3.2 x 1.7 x 0.5 cm) from Inyo Co., California, USA, purchased from Rob Lavinsky (Author: Linda St-Cyr)
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Double terminated,measures about 17 x 12 mm (Author: nurbo)
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Double terminated, naturally etched morganite crystal, from Oceanview mine (Oceanview adit), Elizabeth R. Mine (Hazel W. claim), Chief Mountain, Pala, Pala District, San Diego Co., California, USA
Size 42 x 35 x 25 mm (Author: olelukoe)
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Double-generation calcite, San Antonio El Grande, Chihuahua Mexico. Size: 7cm. (Author: javmex2)
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Doyleite, Gibbsite
Baoshan Prefecture, Yunnan Province, China
95 x 60 x 25 mm (Author: Rob Schnerr) -
Doyleite-Gibbsite Baoshan.jpg (Author: Jordi Fabre)
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Dravite
Hüttermühle, Radeberg, Dresden, Saxony, Germany.
8 x 2,5 cm (Author: Andreas Gerstenberg)
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Dravite
Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia
66 mm x 53 mm x 52 mm (Author: Carles Millan)
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Dravite
Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia
66 mm x 53 mm x 52 mm (Author: Carles Millan)
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Dravite
Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia
66 mm x 53 mm x 52 mm (Author: Carles Millan)
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Dravite
Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia
66 mm x 53 mm x 52 mm (Author: Carles Millan)
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Dravite (Tourmaline Group)
Landanai, Arusha Region, Tanzania
35 mm x 29 mm x 20 mm (Author: Don Lum) -
Dravite (Tourmaline Group)
Plateau Rosa Pass, Breuil-Cervinia, Valtournenche, Aosta Valley (Val d'Aosta), Italy
78,4 x 72,8 mm (Author: Sante Celiberti) -
Dravite (Tourmaline Group)
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
132 x 98 mm (Author: Sante Celiberti) -
Dravite (Tourmaline Group)
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
80 x 77 mm (Author: Sante Celiberti) -
Dravite (Tourmaline Group)
Minas Gerais, Brazil
22mm x 34mm x 20mm (Author: Firmo Espinar) -
Dravite-Schorl Series
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
(Author: am mizunaka) -
Dravite
Jajarkot District, Karnali Pradesh, Nepal
3.3 x 2.8 cm (Author: steven calamuci) -
Dravite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 4mm (Author: Doug) -
Dravite
May Downs Station, Mount Isa, City of Mount Isa, Queensland, Australia
10.0 x 6.7 cm (Author: am mizunaka) -
Dravite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
5 x 3,5 cm (Author: Volkmar Stingl) -
Dravite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
5 x 3,5 cm (Author: Volkmar Stingl) -
Eugui, EsterÃbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
15 cm x 8 cm x 5 cm (Author: James Catmur) -
Drawings of an interpretation of the Alme calcite habit. Top, standard crystallographic orientation. Bottom, view corresponding to Tobias’ photos. (Author: Pete Richards)
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dreislar.jpg (Author: Tobi)
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Drill workings in an area where blasting will be done in a few days. David Soler photo, September 2005. (Author: Joan Rosell)
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Drillers, San José La Rica mine, Real del Monte, Hidalgo, México (1983)
FotografÃa: David Maawad, publicada en "Una visión de la MinerÃa" núm 86 (Author: Luis DomÃnguez)
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Drillers. San Juan Pachuca Mine, Pachuca, Hidalgo, Mexico (1988)
Author: Marco Antonio Hernández Badillo from the book "Entre la tierra y el aire". Edition: Archivo Histórico y Museo de MinerÃa, A.C.
www.distritominero.com (Author: Jordi Fabre)
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DRILLING UNDERGROUND
In underground mines like Milpillas, specialized long-hole drill equipment was paramount for preparing rock for blasting. These powerful drills created deep, precise boreholes into which explosives were loaded. This allowed for controlled detonation, breaking up the ore body into manageable sizes for extraction, a crucial step in the mine’s production cycle.
On a daily basis, miners navigated a subterranean world where the primary target was high-grade Chalcocite, a crucial Copper sulfide ore found within the mine’s extensive enriched blankets. However, earlier operations, before the sulphide zone was reached, brought them face-to-face with a stunning array of secondary Copper minerals, particularly prevalent in the shallower, oxidized zones of the deposit. These encounters routinely included the visually striking blue Azurite and its verdant counterpart, Malachite, which often display intricate intergrowths or even pseudomorphic transformations. Furthermore, the miners commonly observed the lustrous red Cuprite and deposits of glimmering native Copper. While less frequent, other notable green Copper minerals such as Brochantite and the distinctive blue-green Chrysocolla might also be present, alongside occasional rare silicates, painting a vivid picture of the mine’s diverse mineral composition. The mine was well-known for producing exceptionally well-crystallized Volborthite, a rare Copper poly-vanadate, sometimes found on a matrix of Dickite or associated with Azurite and Malachite.
The photographs also highlight the relative scarcity of significant ‘collector-quality’ mineralized pockets conducive to specimen collecting. The Milpillas Mine, despite its economic prowess as a Copper producer, wasn’t uniformly “mineralogically rich†in the way some mineral collectors often dream. While extensive zones yielded abundant Copper ore, the frequent discovery of collector-quality Azurite and Malachite vugs, brimming with “splendent†crystals, was not an everyday occurrence. Like many commercial mining operations, Milpillas had its hot spots; certain areas provided significant quantities of high-grade Copper ore for the electrolytic plant, while others, some distinct from the primary ore body, provided treasure troves for exceptional mineral specimens. This dichotomy is a common reality in the world of mineral collecting, where the pursuit of stunning crystals often means sifting through vast amounts of economically viable yet aesthetically uninteresting ore.
When routine mining operations intersected mineralized veins and vugs, some large, containing exceptional Azurite and Malachite crystals, these occurrences were opportunistically exploited by ‘some workers’ as a means of illicit income supplementation. Penoles, the owners and operators of the mine, actively discouraged such unauthorized extraction, enforcing a strict policy of dismissal and potential criminal prosecution for apprehended individuals. Furthermore, any worker implicated in such illicit activities faced industry-wide blacklisting, effectively precluding future employment within the mining sector.
Initially, the value of these surreptitiously acquired specimens was nominal, commanding only a few pesos. However, the Internet facilitated a rapid increase in market awareness among the miners, who quickly discerned the substantial value placed on these “colored rocks†by International, particularly North American, dealers and collectors.
A NOTE ON “THIS-OR-THAT POCKET†NOMENCLATURE
The use of the term “pocket†to describe certain Milpillas mineral specimens, particularly in reference to their extraction point, transcends simple geographical identification. These labels, rather than being intrinsic descriptors understood by those who extracted the specimens, were often marketing tools designed to imbue the minerals with a specific allure. Those intimately familiar with the mine’s day-to-day operations understood that such terms were colloquialisms, not reflections of actual geological structures or mining methodology.
While official company documents certainly highlighted and celebrated areas with significant mineralization — often featuring stunning, perfectly formed crystals of Azurite, Malachite, and other Copper minerals — they deliberately avoided calling these spots “pockets.†Instead, they used more formal geological terms. Their descriptions focused on the geological structures controlling the mineralization, the types of rocks surrounding the minerals, and their exact mineral makeup. This intentional choice of language pointed to a clear difference between the casual, on-the-ground language used by some of the mine workers who opportunistically and illegally exploited the mineralized zones for personal profit and the precise, scientific terminology preferred in corporate and geological reports. It was likely an effort to keep all official communications consistent and scientifically accurate, ensuring a formal narrative throughout.
Original photos courtesy of Gonzáléz Sánchez (Author: silvia)
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Drusy Calcite with Marcasite,
from Rayas mine, Guanajuato, Gto.
88 x 70 x 25 mm (Author: Carlos M.)
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Drusy pale Amethyst xls on Epidote carpet
Cerro De La Concordia, Piedra Parada, Mun. de Tatatila, Veracruz, Mexico
90x55x72mm
One of my favorites (Author: Carlos M.)
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Druzy quartz, the other part of the pocket. (Author: vic rzonca)
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DSC01321.jpg (Author: Anton Potgieter)
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DSC01326.JPG (Author: Anton Potgieter)
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DSC01329.jpg (Author: Anton Potgieter)
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DSC01335.JPG (Author: Anton Potgieter)
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DSC01338.jpg (Author: Anton Potgieter)
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DSC01362.jpg (Author: Anton Potgieter)
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DSC01377.jpg (Author: Anton Potgieter)
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DSC01388.JPG (Author: Anton Potgieter)
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DSC01389.jpg (Author: Anton Potgieter)
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DSC01399.jpg (Author: Anton Potgieter)
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DSC01407.jpg (Author: Anton Potgieter)
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DSC01413.jpg (Author: Anton Potgieter)
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DSC02227.JPG (Author: olelukoe)
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DSC03181.jpg (Author: Anton Potgieter)
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DSC03184.jpg (Author: Anton Potgieter)
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DSC03200.JPG (Author: Anton Potgieter)
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DSC03203.jpg (Author: Anton Potgieter)
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DSC03204.jpg (Author: Anton Potgieter)
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DSC03206.jpg (Author: Anton Potgieter)
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DSC03210.jpg (Author: Anton Potgieter)
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DSC03221.jpg (Author: Anton Potgieter)
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DSC03222.jpg (Author: Anton Potgieter)
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DSC03228.JPG (Author: Anton Potgieter)
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DSC03241.jpg (Author: Anton Potgieter)
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DSC03249.jpg (Author: Anton Potgieter)
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DSC03253.jpg (Author: Anton Potgieter)
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DSC03272.jpg (Author: Anton Potgieter)
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DSC03274.jpg (Author: Anton Potgieter)
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DSC03300.jpg (Author: Anton Potgieter)
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DSC03311.jpg (Author: Anton Potgieter)
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DSC03314.jpg (Author: Anton Potgieter)
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DSC03326.jpg (Author: Anton Potgieter)
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DSC03331.jpg (Author: Anton Potgieter)
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DSC03340.jpg (Author: Anton Potgieter)
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DSC03367.jpg (Author: Anton Potgieter)
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DSC03375.jpg (Author: Anton Potgieter)
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DSC03403.jpg (Author: Anton Potgieter)
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DSC03407.jpg (Author: Anton Potgieter)
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DSC04437.JPG (Author: Namfluro)
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DSC04438.JPG (Author: Namfluro)
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DSC04439.JPG (Author: Namfluro)
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DSC04479.JPG (Author: javmex2)
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DSC04483.JPG (Author: javmex2)
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DSC04745.jpg (Author: javmex2)
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DSC04749.jpg (Author: javmex2)
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DSC04756.jpg (Author: javmex2)
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DSC04782.jpg (Author: javmex2)
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DSC06328.JPG (Author: Namfluro)
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DSC08546.JPG (Author: javmex2)
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DSC08883.JPG (Author: javmex2)
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DSC08885.JPG (Author: javmex2)
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DSC08886.JPG (Author: javmex2)
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DSCF1036.jpg (Author: vic rzonca)
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DSCF1038 (1).jpg (Author: vic rzonca)
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DSCF1699.jpg (Author: vic rzonca)
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DSCF1761.jpg (Author: vic rzonca)
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DSCF1766.jpg (Author: vic rzonca)
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DSCF1770 (1).jpg (Author: vic rzonca)
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DSCF1911.JPG (Author: Bob Harman)
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DSCF4403.JPG (Author: nurbo)
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DSCF4582.JPG (Author: nurbo)
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DSCF6384.JPG (Author: nurbo)
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DSCF7628.JPG (Author: nurbo)
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DSCF8580.JPG (Author: nurbo)
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DSCF8581.JPG (Author: nurbo)
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DSCF8585.JPG (Author: nurbo)
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DSCF8586.JPG (Author: nurbo)
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DSCF8587.JPG (Author: nurbo)
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DSCN0950.JPG (Author: John S. White)
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DSCN0979.JPG (Author: John S. White)
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DSCN0985.JPG (Author: John S. White)
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DSCN0995.JPG (Author: John S. White)
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DSCN1003.JPG (Author: John S. White)
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DSCN1013.JPG (Author: John S. White)
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DSCN1136.JPG (Author: John S. White)
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DSCN1230.JPG (Author: John S. White)
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DSCN1234.JPG (Author: John S. White)
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DSCN1237.JPG (Author: John S. White)
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DSCN1238.JPG (Author: John S. White)
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DSCN1262.JPG (Author: John S. White)
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DSCN1419.JPG (Author: John S. White)
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DSCN2437.JPG (Author: John S. White)
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DSCN5307.JPG (Author: Gail)
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DSCN5310.JPG (Author: Gail)
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DSCN5368.JPG (Author: Gail)
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DSC_0050.JPG (Author: Gail)
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DSC_0053.JPG (Author: Gail)
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DSC_0074.JPG (Author: Gail)
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DSC_0133.jpg (Author: Tomasz Praszkier)
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DSC_0149.jpg (Author: Gail)
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DSC_0150.jpg (Author: Gail)
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DSC_0499.jpg (Author: Gail)
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DT quartz crystal with attached quartz points, Honghe, yunnan Province, China. 10.5 x 5 x 5 cm (Author: Tracy)
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DT Rutile Mogok Burms 6mm tall (Author: nurbo)
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Dufrenoysite, Realgar
Lengenbach Quarry, Fäld, Binn Valley (Binntal), Wallis (Valais), Switzerland
6 x 4 mm (Author: Volkmar Stingl) -
Dufrenoysite
Lengenbach Quarry, Fäld, Binn Valley (Binntal), Wallis (Valais), Switzerland
4 x 2.5 cm (Author: Volkmar Stingl) -
Duftite
Tsumeb Mine, Tsumeb, Otjikoto, Namibia
fov 1.4 mm (Author: Rewitzer Christian)
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Duftite (Author: Gail)
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Duftite -Benahadux, AlmerÃa, Spain (Author: Rewitzer Christian)
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Duftite -Benahadux, AlmerÃa, Spain (Author: Rewitzer Christian)
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Duftite and Calcite on a Limonite Matrix
Mina Ojuela, MapimÃ, Durango, Mexico
12 cm x 9.5 cm x 2.5 cm (Author: Mark Ost)
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Duftite and Calcite on a Limonite Matrix
Mina Ojuela, MapimÃ, Durango, Mexico
12 cm x 9.5 cm x 2.5 cm (Author: Mark Ost)
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Duftite and Calcite on a Limonite Matrix
Mina Ojuela, MapimÃ, Durango, Mexico
12 cm x 9.5 cm x 2.5 cm (Author: Mark Ost)
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Duftite on calcite with second generation calcite crystals
Tsumeb, Namibia
12 cm (Author: Herman van Dennebroek)
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Duftite on Calcite
Km-3 Mine, Lavrion, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Duftite on Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
43mm x 30mm x 34mm (Author: Heimo Hellwig) -
Duftite on Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
43mm x 30mm x 34mm (Author: Heimo Hellwig) -
Duftite with Rosasite & Smithsonite - Tsumeb, Namibia. 3 mm. (Author: Rewitzer Christian)
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Duftite, galena, fluorite, baryte
Mulda, Freiberg, Erzgebirge, Saxony, Germany.
8 x 6,5 cm
The only existing duftite sample from Mulda. (Author: Andreas Gerstenberg)
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Duftite-conichalcite series
Ojuela Mine, Mapimi, Durango, Mexico
4.5 x 6.5 cm.
Light green botryoidal and micro-crystals associated with colorless calcite crystals on the typical gossan matrix. I acquired this piece from Jordi, and he indicated that the 3 pieces that he had tested each turned out to be duftite. (Author: crosstimber)
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Duftite
Km-3 Mine, Lavrion, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.5 mm (Author: ploum) -
Duftite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
FOV = 2.7 mm (Author: Doug) -
Duftite
Moon Anchor Mine, Hummingbird Spring, Osborn District, Bighorn Mountains, Maricopa County, Arizona, USA
FOV = 0.9 mm (Author: Doug) -
Dugganite
Cogolla Alta Mine, Belalcázar, Comarca Los Pedroches, Córdoba, Andalusia, Spain
fov 0.7 mm (Author: Rewitzer Christian) -
Duirinish, Isle of Skye, Scotland
Hopefully the zoom function will allow a closer look at the Basking Shark - can you see it near the edge of the rocks?
Photo taken from the cliff-top about 180m high. Only had a 3x zoom on that camera at that time.. (Author: Mike Wood)
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Duke of Cornwall Mine Cornish Engine House (Author: crocoite)
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Duke of Cornwall Mine dumps (Author: crocoite)
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Dumortierita, Cuarzo
Vaca Morta Quarry, Serra da Vereda, Boquira, Bahia, Northeast Region, Brazil
28 x 20 x 15 mm. (Author: arturo) -
Dumortierite in Quartz
Vaca Morta Quarry, Serra da Vereda, Boquira, Bahia, Northeast Region, Brazil
35 mm. x 18 mm. x 10 mm. (Author: Val) -
Dumortierite, Quartz
São João da Chapada, Diamantina, Vale do Jequitinhonha, Minas Gerais, Brazil
6.9 x 2.5 cm (Author: Don Lum) -
Dumortierite, Quartz
São João da Chapada, Diamantina, Vale do Jequitinhonha, Minas Gerais, Brazil
6.9 x 2.5 cm (Author: Don Lum) -
Dumortierite, Quartz
São João da Chapada, Diamantina, Vale do Jequitinhonha, Minas Gerais, Brazil
2.4 x 1.0 cm (Author: Don Lum) -
Dumortierite, Quartz
Vaca Morta Quarry, Serra da Vereda, Boquira, Bahia, Northeast Region, Brazil
87 mm x 44 mm x 29 mm (Author: Don Lum) -
Dumortierite
Tsodilo Hill, North-West District (Ngamiland), Botswana
2 x 1,5 cm (Author: Volkmar Stingl) -
Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, Allerdale, former Cumberland, Cumbria, England / United Kingdom
(Author: Forrestblyth) -
Dundasite
Adelaids Mine, Dundas, Tasmania.
12 mm across (approx) (Author: nurbo)
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Dundasite
Mas Dieu, Gard, France
fov 4.5 mm (Author: ploum)
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Dundasite
Mas Dieu, Gard, France
fov 5 mm (Author: ploum)
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Dundasite
Mas Dieu, Gard, France
fov 8 mm (Author: ploum)
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Dundasite and siderite
Mas Dieu, Gard, France
fov 5 mm (Author: ploum)
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Dundasite
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
2.2 x 2.8 cm (Author: crosstimber) -
Dundasite
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
5.7 x 7.1 cm (Author: crosstimber) -
Dundasite
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
5.7 x 7.1 cm (Author: crosstimber) -
Duplex and big Calcite.JPG (Author: h.abbasi)
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DURANGO MEXICO
MAP DISCUSSION
This map of Durango charts the geography of the state, prominently featuring its capital, Victoria de Durango. The city’s name is a lasting tribute to Guadalupe Victoria, the first president of Mexico. The map also pinpoints the locations of some other towns and the historic Ojuela mine. Notably absent is the town of MapimÃ; it lies in such close proximity to the mine that the map’s scale cannot distinguish it as a separate location. Surrounding Durango are the other Mexican states of Sinaloa, Coahuila, Zacatecas, Nayarit and Chihuahua.
A Brief Review
In the rugged heartland of Mexico lies Durango, a land of stark and beautiful contradictions. It’s a place defined by immense scale, a vast territory sprawling across the nation’s northwest where the sky feels larger and the horizons more distant. Carved by the great spine of the Sierra Madre Occidental, Durango serves as a crucial geographic crossroads, physically separating Mexico’s other great provinces. To the east, its mountains give way to the arid Chihuahuan Desert and the industrial Laguna Region, while to the west; they descend into the humid Pacific coastal lowlands. Though its landmass ranks fourth in the nation, its soul is found not in its size, but in these wild, sparsely populated spaces that make it a core state of “El Norte†(The North) and the Mexico of the imagination.
A Land of Two Faces
Here, the geography is destiny. The Sierra Madre Occidental rises in a dramatic sweep of pine and oak forests, a cool, humid world where mountain air carries the scent of resin and rain. These peaks shelter an astonishing biodiversity — the shadow of a puma slips through the trees, black bears forage in the undergrowth, and the golden eagle soars on mountain thermals. But cross this formidable barrier to the east, and the landscape transforms. The mountains’ rain shadow gives way to the sun-scorched plains and the breathless heat of the Chihuahuan Desert, a resilient ecosystem of cacti and coyote that stretches into the famed Laguna Region.
The Veins of Silver
Etched into this dramatic landscape is a story of treasure and toil. Durango’s history was forged in the fire of smelters, its destiny shaped by the glittering veins of Silver that lured conquistadors into its deepest canyons. From the 16th century onward, mining became the state’s lifeblood, funding empires across the sea and building the magnificent colonial cities that stand today. The echo of the pickaxe still resonates; today, a modern industry extracts not only Silver but also vast quantities of Gold, Lead and Zinc, making mining a continued cornerstone of the Durango’s economy — a powerful legacy of riches and hardship written in the very rock of the mountains.
Anchors of Civilization and History
Anchoring this immense territory are its cities. The capital, Victoria de Durango, is the state’s historic soul, its colonial heart of carved stone and quiet courtyards beating with a modern rhythm. Far to the northeast, in the state’s industrial engine room, the cities of Gómez Palacio and Lerdo form a vital metropolitan hub, their industrious pulse driving the agriculture and commerce of the Laguna Region.
The story of Durango is written in layers, reaching back to the Tepehuanes and Acaxees, its first custodians. Their world was irrevocably changed by the arrival of Francisco de Ibarra in 1563, ushering in an era of colonial ambition. Centuries later, these same mountains and plains became the crucible of revolution, giving rise to the state’s most famous son, Pancho Villa, whose cry for justice once echoed through the canyons. Durango remains a land of profound contrasts, a testament to resilience, forever defined by its untamed mountains and the indelible history they hold. (Author: silvia)
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Durango MX2.jpg (Author: d_hawtho)
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Dyscrasite
PřÃbram, Central Bohemia Region, Czech Republic
4.1 x 5.0 cm
Metallic dyscrasite crystals with an iridescent tarnish on stibarsen matrix. Collected in 1982. (Author: crosstimber)
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Dyscrasite
Samson Mine, St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany
2,5x2x1,5 cm
Very interesting old sample, with twinned, pale gray crystals and a bit of matrix. From old collection (ex Maucher). (Author: Simone Citon)
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Dyscrasite after Allargentum and with Silver
Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
2.5 x 5.9 cm (Author: crosstimber) -
Dyscrasite after Allargentum on Calcite
Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
61 x 42 mm (Author: Manuel Mesa) -
Dyscrasite after Allargentum on Calcite
Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
87mm x 78mm x 45mm (Author: Don Lum) -
dyscrasite on arsenic, first view (Author: Tracy)
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dyscrasite on arsenic, second view (Author: Tracy)
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Dyscrasite with Löllingite
Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
6.3x4.4x6.5 cm''s (Author: Joseph DOliveira) -
Dyscrasite, pyrargyrite
Samson mine, St. Andreasberg, Harz mtn., Lower Saxony, Germany.
7 x 5,5 cm (Author: Andreas Gerstenberg)
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Dyscrasite
Uranium Mine number 21 (shaft number 21), Háje, PřÃbram, Central Bohemia Region, Bohemia, Czech Republic
2.6 x 2.9 cm (Author: crosstimber) -
Dyscrasite
Bou Azzer mining district, Drâa-Tafilalet Region, Morocco
50x30x20 mm (Author: Dany Mabillard) -
Dyscrasite
Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
6.0 x 5.0 x 3.0 cm (Author: Michael Shaw) -
E0910008海蓝5.JPG (Author: Walker)
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E0910009海蓝3.JPG (Author: Walker)
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E0910009海蓝4.JPG (Author: Walker)
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E0910012海蓝石榴电气长石水晶4.JPG (Author: Walker)
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E0910016海蓝黄玉电气长石板钛1.JPG (Author: Walker)
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Eastonite
C. K. Williams Quarry, Easton, Northhampton County, Pennsylvania, USA
9.5 x 11.0 cm
Yellowish-green eastonite embedded in a light colored matrix from the type locality. (Author: crosstimber)
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Eastonite
C. K. Williams & Co. Quarry, Chestnut Hill, Easton, Northampton County, Pennsylvania, USA
9.5 x 11.0 cm (Author: crosstimber) -
Edingtonita na Natrolita.
Mina Jacupiranga, Cajati, São Paulo, Brasil
9,5 cm X 6,0 cm X 6,8 cm (Author: silvio steinhaus)
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Edingtonite
Ice River Alkaline Complex, Golden Mining Division, British Columbia, Canada
FOV 15 mm (Author: Adrian Pripoae)
Access to FMF Forum
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