Rhabdoborite-(W)
Rhabdoborite-(W) is a rare borate mineral with a complex chemical formula that includes magnesium, tungsten, vanadium, boron, phosphorus, arsenic, and fluorine. Its formula is Mg12(W6+,V5+)1 * 5O6{[BO3]6–x[(P,As)O4]xF2–x} (x < 1), indicating a variable composition with borate and phosphate/arsenate groups. It crystallizes in the hexagonal system and is part of the borate mineral class. The mineral exhibits a vitreous luster and typically appears white or colorless. It has a relatively high density and moderate hardness, making it a unique and scientifically interesting mineral due to its complex chemistry and structural variability.
Overview
Rhabdoborite-(W) is a rare borate mineral with a complex chemical formula that includes magnesium, tungsten, vanadium, boron, phosphorus, arsenic, and fluorine. Its formula is Mg12(W6+,V5+)1 * 5O6{[BO3]6–x[(P,As)O4]xF2–x} (x < 1), indicating a variable composition with borate and phosphate/arsenate groups. It crystallizes in the hexagonal system and is part of the borate mineral class. The mineral exhibits a vitreous luster and typically appears white or colorless. It has a relatively high density and moderate hardness, making it a unique and scientifically interesting mineral due to its complex chemistry and structural variability.
How to recognize it
Rhabdoborite-(W) can be identified through its hexagonal crystal system and vitreous luster. Its color is typically white or colorless, and it has a relatively high density. The mineral's hardness is moderate, though an exact Mohs value is not specified. It may be confused with other borate minerals due to similar appearance and luster, but its unique chemical composition and crystal structure help distinguish it.
Trivia
Rhabdoborite-(W) is notable for its complex and variable chemical formula, which includes multiple anionic groups such as borate, phosphate, and arsenate. It belongs to the rare and structurally diverse borate mineral class. The mineral's hexagonal crystal system adds to its scientific interest, as does its inclusion of both tungsten and vanadium in its structure, which is uncommon in borate minerals.