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Mineralati

Minerals

Graftonite

graftonite

Fe²⁺Fe²⁺2(PO4)2

Graftonite Mineral Specimen For Sale

Graftonite Mineral Specimen For Sale — via www.dakotamatrix.com · Source

Overview

Graftonite is an iron(II), manganese, calcium phosphate mineral with the chemical formula (Fe2+,Mn,Ca)3(PO4)2. It forms lamellar to granular translucent brown to red-brown to pink monoclinic prismatic crystals. It has a vitreous luster with a Mohs hardness of 5 and a specific gravity of 3.67 to 3.7. It was first described from its type locality of Melvin Mountain in the town of Grafton, in Grafton County, New Hampshire.

Scientific references

  1. Graftonite — Wikidata. https://www.wikidata.org/wiki/Q2738204 Link
  2. Graftonite — Wikipedia. https://en.wikipedia.org/wiki/Graftonite Link