Ehrleite
Ehrleite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Ca₂ZnBe(PO₄)₂(PO₃OH)·4H₂O.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 3.5; specific gravity 2.64; White streak; Vitreous luster; optically biaxial.
IMA symbol Ehr, IMA status: approved, named in 1983.
A very rare mineral with other secondary phosphates, in the outer to intermediate zone of a complex granite pegmatite.
It is found associated with Apatite, mitridatite, roscherite, hydroxyl-herderite, goyazite–crandallite, parascholzite, manganese oxides, beryl, quartz.
In honor of Howard Ehrle, Miles City, Montana, USA, who discovered the mineral.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more E minerals or help write this entry.