Dalnegorskite
Dalnegorskite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₅Mn(Si₃O₉)₂.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Wollastonite structural group.
Key properties: Mohs hardness 6; specific gravity 3.02; Vitreous luster; optically biaxial.
IMA symbol Dng, IMA status: approved, named in 2018.
A rock-forming mineral in boron-bearing calcareous skarns at the contact of limestone with biotite-hornblende granite.
It is found associated with Hedenbergite, datolite, andradite, galena, sphalerite, pyrrhotite.
The name is derived from the locality where the studied material was collected.
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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