Hydrogrossular garnetite (Transvaal jade) (Transvaal, South Africa) 2 : 無料・フリー素材/写真
Hydrogrossular garnetite (Transvaal jade) (Transvaal, South Africa) 2 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | This rock is nicknamed "Transvaal jade", but it is not jade. "True" jade refers to either nephrite or jadeitite metamorphic rocks. Transvaal jade is a greenish garnetite, a crystalline-textured metamorphic rock composed of hydrogrossular garnet - this sample is cryptocrystalline. Some specimens have black bands of chromitite.Stratigraphy: unrecorded/undisclosed (but possibly from the Critical Zone, Western Lobe of the Rustenburg Layered Suite, Bushveld Complex, Paleoproterozoic, ~2.05 Ga)Locality: unrecorded/undisclosed site in Transvaal, South Africa (but possibly from old diggings on the grounds of a Lonmin platinum mine, apparently at or near Buffelsfontein, Bonjanala Platinum District Municipality, North West Province, South Africa) |
| 撮影日 | 2020-12-02 23:15:40 |
| 撮影者 | James St. John |
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