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Calcite : CaCO3 | |
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Black Head, Shelly Beach, Ballina, Rous Co., New South Wales, Australia Botryoidal Calcite concretion formation. Underside displays multi-coloured (cream, brown to black) spherical growth patterns. Overall size 27mm x 20mm x 8mm Collected 1965 Personal collection and photo |
| © Keith Compton | Photo ID: 35655 View Count: 408 |
Calcite (Var: Ferroan Calcite) : (Ca,Fe)CO3 | |
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Black Head, Shelly Beach, Ballina, Rous Co., New South Wales, Australia Sperical aggregates of dark tan Calcite (Ferroan) on dark brown botryoidal Calcite on grey, almost black, basalt. The spheres are almost “apple shaped” in that one end of each exhibits a depression similar to that left by a stalk. The radiating structure of the spheres is clearly visible. Overall size: 69mm × 45mm × 24mm. The spheres to ... |
| © Keith Compton | Photo ID: 149310 View Count: 209 |
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