Demagistrisite
Demagistrisite is a rare hydrated silicate mineral with the chemical formula barium calcium manganese silicate hydroxide hydrate. It belongs to the inosilicate class and crystallizes in the orthorhombic system. The mineral is characterized by its relatively low hardness, estimated to be around 4 on the Mohs scale, and a moderate density. It exhibits a vitreous to pearly luster and is typically brown in color. As a hydrated mineral, it contains water within its crystal structure, which influences its physical properties and stability. Demagistrisite is part of the broader group of silicate minerals that incorporate complex anionic structures.
Composition
- OOxygen47.6%
- SiSilicon17.4%
- BaBarium17.0%
- CaCalcium9.9%
- MnManganese6.8%
- HHydrogen1.2%
Overview
Demagistrisite is a rare hydrated silicate mineral with the chemical formula barium calcium manganese silicate hydroxide hydrate. It belongs to the inosilicate class and crystallizes in the orthorhombic system. The mineral is characterized by its relatively low hardness, estimated to be around 4 on the Mohs scale, and a moderate density. It exhibits a vitreous to pearly luster and is typically brown in color. As a hydrated mineral, it contains water within its crystal structure, which influences its physical properties and stability. Demagistrisite is part of the broader group of silicate minerals that incorporate complex anionic structures.
How to recognize it
Demagistrisite can be identified by its low hardness of approximately 4 on the Mohs scale, which is relatively soft for a silicate mineral. It typically appears brown in color and has a vitreous to pearly luster. Its streak is likely light in color, though specific details are not provided. Due to its rarity and lack of distinguishing features, it may be confused with other hydrated silicates, but its chemical composition and crystal system can help in differentiation.