
Heterosite , Ferrisicklerite Locality: Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton County, New Hampshire, USA Original description: A 2.7 by 2.3 mass of purplish Heterosite with brown Ferrisicklerite. JSS specimen and photo. — Photo: John Sobolewski (JSS) · CC BY 3.0
Ferrisicklerite
Ferrisicklerite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Li₁₋ₓ(Fe³⁺,Mn²⁺)(PO₄).
It crystallizes in the orthorhombic crystal system (space group Pmnb). It is a member of the Olivine structural group.
IMA symbol Fsik, grandfathered status — known before the IMA’s founding, named in 1937.
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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