Cassiterite Crystal – Columnar Striations – Yaogangxian Mine, Hunan

Discover the captivating beauty of Cassiterite, a remarkable mineral known for its lustrous sheen and unique striations. This specimen originates from the renowned Yaogangxian Mine in Chenzhou, Hunan Province, China, a locality celebrated for producing fine cassiterite crystals alongside other rare minerals. Cassiterite crystallizes in the tetragonal system and typically exhibits a hardness of 6 to 7 on the Mohs scale, making it relatively durable for display and handling. Its chemical formula is SnO₂, reflecting its status as the primary ore of tin.

This particular specimen features well-defined, lustrous crystals with distinctive striations that highlight the mineral's natural growth patterns. The coloration ranges from deep brown to nearly black, with a subtle translucency along crystal edges that enhances its visual appeal. Its elongated form and sharp crystal faces make it an attractive addition for collectors interested in well-formed cassiterite from a historically significant mining region.

Given the rarity of high-quality cassiterite crystals from Yaogangxian, this piece offers notable collector value, especially for those focusing on Chinese mineral localities or tin ore specimens. When handling, it is advisable to avoid prolonged exposure to moisture and to store the specimen in a stable environment to preserve its luster and structural integrity.

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