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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA This specimen hosts two sizable, rich, and showy patches of well-crystallized altaite. Specimen measures 6cm x 5.1cm x 3.5cm, Ex. Robert E. Jenkins II Collection. |
| © Jasun McAvoy | Photo ID: 207377 View Count: 114 |
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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA This specimen hosts two sizable, rich, and showy patches of well-crystallized Altaite. Ex. Robert E. Jenkins II Collection No. 5829. Specimen measures 6.53cm x 4.58cm x 2.31cm. |
| © Jasun McAvoy | Photo ID: 256830 View Count: 16 |
Gold : Au | |
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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA Wire gold associated with hessite, petzite, and pyrite. Field of view, 5mm x 5mm. Brent Thorne specimen and photograph. |
| © Brent Thorne | Photo ID: 73576 View Count: 246 |
Gold : Au, Petzite : Ag3AuTe2 | |
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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA Rounded 8 mm aggregate of gold covered by multiple, stepped crystal faces formed in a cavity with Petzite from the Cash mine, Gold Hill, Boulder Co., Colorado, USA. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 87059 View Count: 224 |
Hessite : Ag2Te | |
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Valley Forge Occurrence (Critic and Railroad Boy; Sunshine; Ingram; Three Brothers; Atchison; Belle; Golden Eagle; Melvina; Baron; Richmond), Gold Hill District, Boulder Co., Colorado, USA Width of field is 2.5 mm. Collection of Jesse Crawford. The depth of field has been enhanced using Helicon Focus (13 exposures). Equipment: Nikon D-100 digital camera on a homemade microscope. |
| © 2008 Jesse Crawford | Photo ID: 178346 View Count: 116 |
Petzite : Ag3AuTe2 | |
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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA A brilliant modified isometric crystal of Petzite that measures 0.2 mm across. The crystal is one of many on a large minature sized specimen associated with Hessite, Quartz, Pyrite, and very rich Gold. Robert Meyer specimen and photo. |
| © 2004 ROM | Photo ID: 14378 View Count: 1578 |
Petzite : Ag3AuTe2 | |
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Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, USA Cubic crystal of petzite associated with pyrite and gold. Field of view, 5mm x 5mm. Brent Thorne specimen and photograph. |
| © Brent Thorne | Photo ID: 50668 View Count: 511 |
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Red Cloud Mine (Chicago; Colorado Occurrence), Gold Hill District, Boulder Co., Colorado, USA Masses of metallic tetradymite are rich throughout this 5.1 x 3.0 x 2.7 cm matrix. Ex Peter Gillis collection; comes with a previous label from the collection of Ralph Dietz. Neat for the species/locality! |
| © Dan & Diana Weinrich Minerals | Photo ID: 265160 View Count: 14 |
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