Burroite
Burroite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Ca₂(NH₄)₂(V₁₀O₂₈)·15H₂O.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Pascoite structural group.
Key properties: Mohs hardness 1.5–2; specific gravity 2.43; Yellow streak; Vitreous luster.
IMA symbol Burr, IMA status: approved, named in 2016.
From the oxidation of montroseite-corvusite assemblages in a moist environment. The NH4+ presumably from organic matter in this roll-front uranium and vanadium deposit in sandstone.
It is found associated with Schindlerite.
The name is taken from the type locality, the Burro mine, Colorado, USA.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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