Wenkite
Wenkite is a rare hydrous calcium barium silicate hydroxide sulfate mineral with the chemical formula Ba4Ca6(Si,Al)20O41(OH)2(SO4)3(H2O). It belongs to the hexagonal crystal system and is classified in the Strunz system as 9.GD.25 and in the Dana system as 76.2.5.16. Wenkite typically exhibits a vitreous luster and is usually colorless or white in appearance. It has a relatively low hardness on the Mohs scale and a moderate density. This mineral is part of the inosilicate group, characterized by its chain-like silicate structure.
Composition
- OOxygen38.2%
- SiSilicon23.9%
- BaBarium23.4%
- CaCalcium10.2%
- SSulfur4.1%
- HHydrogen0.2%
Overview
Wenkite is a rare hydrous calcium barium silicate hydroxide sulfate mineral with the chemical formula Ba4Ca6(Si,Al)20O41(OH)2(SO4)3(H2O). It belongs to the hexagonal crystal system and is classified in the Strunz system as 9.GD.25 and in the Dana system as 76.2.5.16. Wenkite typically exhibits a vitreous luster and is usually colorless or white in appearance. It has a relatively low hardness on the Mohs scale and a moderate density. This mineral is part of the inosilicate group, characterized by its chain-like silicate structure.
Etymology
Wenkite is named after Eduard Wenk, a Swiss mineralogist. The mineral was approved by the International Mineralogical Association (IMA) and is recognized by its unique chemical composition and crystal structure.
How to recognize it
Wenkite can be identified by its hexagonal crystal system and vitreous luster. It has a relatively low hardness on the Mohs scale, though the exact value is not specified. The mineral is typically colorless or white and may exhibit a white streak. Due to its rarity and specific chemical composition, it is often confused with other hydrous silicates, but its unique formula and crystal structure help in differentiation.
Trivia
Wenkite is notable for its complex chemical formula, which includes both silicon and aluminum in its silicate framework. It is a rare mineral, with only a few known occurrences worldwide. The mineral is named after Eduard Wenk, honoring his contributions to mineralogy. Its hexagonal crystal system and unique sulfate content make it an interesting subject for mineralogical study.