White crystals of this very rare Na-Ca-Sr-Al fluoride calcjarlite from a new locality in Iquique, Chile. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Calcjarlite
Calcjarlite is an IMA-recognized mineral species in the halide class, with the chemical formula Na₂(Ca, )₁₄(Mg, )₂Al₁₂F₆₄(OH)₄.
It is a member of the Jarlite structural group.
Key properties: Mohs hardness 4; specific gravity 3.51; Vitreous luster; optically biaxial.
IMA symbol Cjar, IMA status: approved, named in 1970.
Found in a fluorite vein in quartz-mica schists.
It is found associated with Fluorite, thorite, usovite, chamosite, phillipsite, erionite, micas, halloysite.
As a CALCium analog of jarlite.
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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