標 本 名: | 電気石 / 石英 / 金雲母 (Tourmaline, Variety: Elbaite / Quartz / Phlogopite)
| 化学組成: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) / SiO2 / KMg3(Si3Al)O10(F,OH)2 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Shigar Valley, Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | This a fine doubly terminated quartz one end is multiple twinned with two another angular crossing crystals. Also several green tourmaline crystals are attached the big one is not terminated all other smaller crystals are doubly terminated the quartz itself is also without blemish. Fine quartz specimen from Pakistan
| 
