標 本 名: | ヘルデル石 ((Hydroxyl-) Herderite) / トパーズ / フッ素燐灰石 / クリーヴランド石 / エルバイト(トルマリン) / タンタル石, マンガンタンタル石 (Alvarolite)
| 化学組成: | CaBe[(OH,F)|PO4] / Al2SiO4(F,OH)2 / Ca5(PO4)3F / Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) / NaAlSi3O8 / MnTa2O6 | サ イ ズ: | 36,2 x 24,4 x 20,8
クリスタル: 21,7 x 13,7 mm | 重量: | | 透明: | | 数量: | | 産地: | Shengus (Shingus), Haramosh Mts., Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | Here you get the multiple twinned herderite crystal with fully intact crystal faces and fine luster. The matrix is composed out of snow white Cleavelandite and the fully intact Topaz crystals. Furthermore you find four apatite, one green tourmaline and several small blade shaped and lustrous manganotantalite crystals. There is another unknown prismatic pinkish crystal embedded but the surface is pretty etched. This is a very rarely found paragenesis with at least six different mineral species!!
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