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(Autor: John Jaszczak)
1.3-mm sphalerite. Bluffton Stone
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(Autor: John Jaszczak)
Coarse spherical aggregate of grap
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(Autor: John Jaszczak)
Compact spherical aggregate of gra
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(Autor: John Jaszczak)
Copper possible pseudomorph after
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(Autor: John Jaszczak)
Copper, Calcite and Baryte. White
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(Autor: John Jaszczak)
Copper, Calcite, Datolite. Quincy
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(Autor: John Jaszczak)
Copper
Great Sand Bay, E -
(Autor: John Jaszczak)
Copper
Great Sand Bay, E -
(Autor: John Jaszczak)
Graphite with spiral and stellar o
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(Autor: John Jaszczak)
Twisted crystal of cinnabar (~1 mm
