Hochelagaite
Hochelagaite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula CaNb₄O₁₁·8H₂O.
It crystallizes in the monoclinic crystal system.
Key properties: Mohs hardness 4; specific gravity 2.89; White streak; Vitreous to silky luster; optically biaxial.
IMA symbol Haga, IMA status: approved, named in 1983.
Found in vugs of a dawsonite-bearing sill in a limestone deposit (Francon quarry, Canada); in cavities in altered pegmatite dikes, hornfels, sodalite syenite, or miarolitic cavities.
It is found associated with Franconite, weloganite, calcite, quartz (Francon quarry, Canada).
The name refers to Hochelaga, an early name for Montreal, Canada and its surrounds, within which the mineral occurs.
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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