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Azoproite

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Azoproite
Rare azoproite crystals
General
CategoryBorate mineral
Formula
(repeating unit)
(Mg,Fe2+
)
2
(Fe3+
,Ti,Mg)(BO
3
)O
2
IMA symbolAzo[1]
Crystal systemOrthorhombic
Identification
ColorBlack
CleavageDistinct/Good
Good on (010), less good on (001)
FractureConchoidal
TenacityBrittle
Mohs scale hardness5.5
LusterAdamantine
References[2]

Azoproite is a rare manganese iron borate mineral with the chemical formula (Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2. It was first identified near Lake Baikal, Russia. It was named after the Association pour l'Etude Géologique des Zones Profondes de l'Ecorce Terrestre, whose acronym is AZOPRO in French.[2]

References

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  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b Azoproite Archived 2016-12-01 at the Wayback Machine on mindat.org
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