標 本 名: | くさび石 (スフェーン） (Sphene (Titanite))
| 化学組成: | CaTiSiO5 | サ イ ズ: | 48,0 x 31,0 x 29,0
クリスタル: 16,7 x 3,8 mm | 重量: | | 透明: | | 数量: | | 産地: | Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, アフガニスタン (Afghanistan) | This is a rare yellow Sphen crystal in matrix, disclosing a superb sharp shape with partly very gemmy transparency and great luster. There is only a slight damaged spot but at one side of the crystal, nevertheless a fine colored specimen with very defined and sharp edges and crystal striation, around the crystals you can see also greenish black hornblende crystals.
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