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Adularia : KAlSi3O8 | |
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St Agnes, St Agnes District, Cornwall, England, UK Adularia on a bright quartz matrix,the old label simply states St Agnes as the location. The size of this frame is approximately 35mm x 25mm. The overall specimen size is 80mm x 70mm x 50mm. Collection of P Trebilcock. |
| Photo ID: 161782 View Count: 129 | |
Cassiterite : SnO2 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK Cassiterite pseudomorph after orthoclase feldspar, 30mm. Ian Jones collection |
| © Ian Jones | Photo ID: 5691 View Count: 434 |
Cassiterite : SnO2 | |
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Seal Hole Mine, St Agnes Consols (Polberro Consols), St Agnes, St Agnes District, Cornwall, England, UK Large cabine specimen with 1cm Cassiterite crystals, specimen is 5.5 inches (14cm) wide |
| © J.Ralph 2003 | Photo ID: 13608 View Count: 499 |
Cassiterite : SnO2, Quartz : SiO2 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK Dark grey-black fine grained Cassiterite pseudomorph of Carlsbad twin Orthoclase. Some minor milky Quartz associated. Originally collected around 1830s Overall size 24mm x 20mm x 9mm Personal collection and photo. |
| © Keith Compton | Photo ID: 41862 View Count: 317 |
Cassiterite : SnO2, Topaz : Al2[(F,OH)2|SiO4] | |
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Seal Hole Mine, St Agnes Consols (Polberro Consols), St Agnes, St Agnes District, Cornwall, England, UK An excellent, classic, old-time combination piece from Cornwall, England of highly lustrous cassiterite crystals to 6 mm interspersed with pastel-green topaz on matrix from the Seal Hole Mine in the St. Agnes District. 4.0 x 4.0 x 3.0 cm |
| © Rob Lavinsky | Photo ID: 41447 View Count: 261 |
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St Agnes, St Agnes District, Cornwall, England, UK Stacked cassiterite crystals sitting among quartz crystals. The very old label just states St Agnes as the locality. Size of the specimen is 70mm x 60mm x 40mm. In the collection of P Trebilcock. |
| Photo ID: 160911 View Count: 156 | |
Cassiterite : SnO2 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK Cassiterite pseuodmorphs after orthoclase. Harvard Museum of Natural History no. 99530,31. Label is about 5.5 cm across. P. Cristofono photo. |
| © 2007 Peter Cristofono | Photo ID: 95057 View Count: 124 |
Cassiterite : SnO2, Quartz : SiO2 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK A particularly dense piece. Dark veins of cassiterite can be seen running through the slaty matrix. Specimen is 10cm by 5cm. Self collected 2006. |
| Photo ID: 131241 View Count: 114 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK An interesting English specimen of Cassiterite pseudomorphing Orthoclase. The pseudomorphs are usually found as single crystals, it is quite unusual to find them as a group of three crystals growing together. The Cassiterite is sparkling dark brown and well defined showing the form of Carlsbad-twinned Orthoclase crystals, the largest measuring ... |
| © Kristalle and Crys | Photo ID: 106198 View Count: 92 |
Cassiterite : SnO2 | |
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Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK Cassiterite pseudomorph of twinned Orthoclase xls. Both “arms” of the cross show typical Carlsbad twinning on the c-axis. Overall size 22mm × 26mm × 13mm. Personal collection and photo. |
| © Keith Compton | Photo ID: 149066 View Count: 86 |
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