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Bornite : Cu5FeS4 | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK 8x6x4.6cm. A sandy coloured quartzite matrix has many black bornite xtls attached. No iridescence present. |
| © Crystal Vine | Photo ID: 12555 View Count: 570 |
Chalcocite : Cu2S | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK 0.6mm crystals on bornite coated chalcopyrite. Steve Rust photo & collection |
| © Steve Rust | Photo ID: 2626 View Count: 531 |
Chalcocite : Cu2S, Bornite : Cu5FeS4 | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK Huge prismatic crystals to 6 cm. The faint irridescence is caused by a thin crust of bornite in some places. Specimen size: 7 x 3 x 2.5 cm. P Haas photograph and collection (no. 22-025), ex Sam Weller personal collection. |
| © Peter Haas | Photo ID: 26224 View Count: 451 |
Chalcocite : Cu2S | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK A matrix of brecciated quartz breaks out into a mass of intergrown chalcocite crystals to 6-9 mm in length. Very rich old specimen with some great crystals. |
| © 2002 Thames Valley Minerals | Photo ID: 5590 View Count: 377 |
Chalcocite : Cu2S | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK Crystal Classics specimen Approx 8cm across. Munich Show 2009 |
| © J.Ralph | Photo ID: 261917 View Count: 56 |
Chalcocite : Cu2S | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK 4.3 cm wide |
| © Dan & Diana Weinrich Minerals | Photo ID: 228290 View Count: 31 |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK 5.4 x 4.2 x 4.0 cm. Lustrous to matte-finish, metallic-gray chalcocite crystals richly cover the contrasting, 3-dimensional, gossan matrix on this fine specimen from the Tincroft Mine of Cornwall. The sharp, blocky, tabular crystals are up to 5 mm. The mines in this historic area closed around 1913. Ex. Wes Parker Collection. |
| © Rob Lavinsky | Photo ID: 255013 View Count: 12 |
Chalcopyrite : CuFeS2, Quartz : SiO2 | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK Chalcopyrite with Quartz from Tincroft Mine, Pool, Illogan, Redruth, Cornwall An excellent and classic example from the Tincroft Mine. A group of well defined crystals on a perfectly sized matrix. It was bought from Sir Arthur Russell in 1926. Size:3.7 x 3.4 x 3.1 cm |
| © fabreminerals.com | Photo ID: 56484 View Count: 4257 |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK 3.4 x 3.3 x 3.0 cm. Sharp, intergrown chalcopyrites to 1 cm are perched on quartz on this fine miniature specimen. It is an old classic, now seldom seen. The provenance starts in the late 1800s or early 1900s with a collector named A. Pearse Jenkin, from whom it went to the noted collector Arthur Russell (and retains his hand-written label). From ... |
| © Rob Lavinsky | Photo ID: 231239 View Count: 33 |
Siderite : FeCO3 | |
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Tincroft Mine, Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK Siderite crystals to 7mm. Ian Jones collection |
| © Ian Jones | Photo ID: 10166 View Count: 370 |
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