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Actinolite (Var: Byssolite) : ☐Ca2(Mg,Fe2+)5(Si8O22)(OH)2 | |
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Yuma, Yuma District, Yuma Co., Arizona, USA Width of field 2.5 mm. Collection of Jesse Crawford. Compositing software: CombineZP. Equipment: Nikon D-100 digital camera on a homemade microscope. |
| © 2008 Jesse Crawford | Photo ID: 190760 View Count: 71 |
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Castle Dome District, Castle Dome Mts, Yuma Co., Arizona, USA Massive anglesite alteration of vein deposit galena measuring 2 x 3 inches comes with an old Filer's label. Collection and photo of Charles Creekmur. |
| © Charles Creekmur | Photo ID: 236879 View Count: 29 |
Calcite : CaCO3, Wulfenite : Pb[MoO4] | |
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Hull Mine, Hull Mine group (Rialto Mine group; Hull group of claims; Rialto claims), Buckeye vein group, Castle Dome Mine group, Kofa Game Range, Castle Dome District, Castle Dome Mts, Yuma Co., Arizona, USA Group of thin calcite crystals on matrix 5cm tall and 5.5cm across with small wulfenite crystals. From the 100\' level of the Hull Mine. Photogarphed by, and in the collection of, Karl Volkman |
| © Karl Volkman | Photo ID: 12672 View Count: 350 |
Cerussite : PbCO3 | |
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Hull Mine, Hull Mine group (Rialto Mine group; Hull group of claims; Rialto claims), Buckeye vein group, Castle Dome Mine group, Kofa Game Range, Castle Dome District, Castle Dome Mts, Yuma Co., Arizona, USA 1.9cm x 2.5cm x 1.3cm Cerussite crystals from a very different location with unusual form. Purchased from RAY CYN MINERALS Tucson February 2001. Collection of Danny Jones |
| © Danny Jones | Photo ID: 177137 View Count: 66 |
Chrysocolla : (Cu,Al)2H2Si2O5(OH)4·nH2O | |
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Eagle Tail group (Golden State Mine), Eagle Tail District, Eagle Tail Mts (Cemetary Ridge), Yuma Co., Arizona, USA Pseudomorph; size of the "crystals" 2 mm. Mindat.org Photo of the Day - 12th Nov 2008 |
| © Luigi Mattei | Photo ID: 187454 View Count: 414 |
Fluorite : CaF2 | |
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Yuma Co., Arizona, USA Fluorite cubes in curious modified form. The colour is more greenish purple then shown on the photo. Dimensions: 6cm x 11cm Philip Mostmans specimen & photo 2006 |
| © PM 2006 | Photo ID: 61470 View Count: 316 |
Fluorite : CaF2, Quartz : SiO2 | |
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Yuma Co., Arizona, USA Curious specimen of blue octaedral fluorite on quartz. Dimensions: 12cm x 10cm Philip Mostmans specimen & photo 2006 |
| © PM 2006 | Photo ID: 61469 View Count: 274 |
Fluorite : CaF2 | |
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Yuma Co., Arizona, USA This bizarre Fluorite looks like an Aztec city but is actually comprised of modified octahedrons of CaF2 of course. The terminations appear natural although quite unusual- like windows into the temple. I wish I had another one of these it is just so fascinating! About 6.5 cm across and in the personal collection of J. Wingard. |
| © J. Wingard | Photo ID: 32234 View Count: 258 |
Fluorite : CaF2 | |
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Castle Dome District, Castle Dome Mts, Yuma Co., Arizona, USA The largest xl is 9 mm along the edges. Photo and collection Antonio Borrelli |
| © Antonio Borrelli | Photo ID: 64436 View Count: 176 |
Fluorite : CaF2 | |
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Castle Dome Mts, Yuma Co., Arizona, USA A fine fluorite specimen from this area.This specimen boasts a light green hue and is almost a perfect cubic twin. This fluorite measures 3cm X 4cm X 3cm. Collected by me, and currently in my personal collection. |
| © Adam Harper | Photo ID: 217542 View Count: 47 |
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