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Gypsum
Naica Mine, Chihuahua, Mexico
7 cm
Small group of neogenic gypsum crystals formed in a mine sump. Shows two stages of gypsum growth...an early transparent "selenite" stage of long crystals and a later coating of dusty fine-grained gypsum (Author: Peter Megaw)
| Dimensions: | 515 x 445 |
| File size: | 26.93 kbytes |
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