Quartz (Japan-law) from South Africa (53033)

Currency:USD Category:Collectibles / Rocks, Fossils & Minerals Start Price:310.00 USD Estimated At:625.00 - 3,750.00 USD
Quartz (Japan-law) from South Africa  (53033)
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An unusual specimen from the South African locality which has become famous for producing "Cactus" quartz clusters. This specimen features a "Japan-Law" Twinned Quartz Crystal which has been completely overgrown by the same druzy quartz crystals which are seen in "Cactus" quartz. The "Japan-Law" of quartz twinning is the only common twin-law of quartz where the two twin crystals are visible as individuals. In a Japan-Law twin the c-axis of two crystals meet at an angle of 84°33', with two of the m prism faces of both crystals being parallel. The result is usually a V-shaped twin, often the Japan-Law twin looks tabular, because the crystal grows faster between the two arms. This is a exceptional quartz specimen in excellent condition. Dimensions (cm): 9.5 H x 8 W x 3 D. Location: Boekenhoutshoek area, Mkobola, Nkangala District, Mpumalanga Province, South Africa

Country (if not USA): South Africa