Search Mineralpedia – A Mineral Photo Database and Identification Guide

Named for being the Mn²⁺ analogue of the mineral nordite-Ce. Found only at the co-type localities at the Kedykverpakhk Mountain and the Karnasurt Mountain, both in the Lovozero massif of the Kola Peninsula of Russia. Occurs as colorless to pale brown, thin, platy crystals in rosettes or spherulites in sodalite syenites and ussingite veins.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

Named for the relationship to vesuvianite and for the dominance of manganese in the chemical composition. A rare mineral found in South Africa at the Wessels mine as crystals in veins and vugs, and at the N’Chwanning II mine, the type locality, as a rock forming mineral in association with grossular and xonotlite. Also found in the Harstigen mine in Varmland, Sweden. Manganvesuvianite forms as red to lilac and black prismatic crystals.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

Named to honor Dr. George Rogers Mansfield, a former geologist at the United States Geological Survey. Mandfieldite is an uncommon mineral that occurs of hydrothermal origin in altered and mineralized andesitic pyroclastic rocks at its type locality at Hobbart Butte in Oregon, USA. Other localities for Mansfieldite include in Mexico, Germany, France, England, Algeria, Australia, and Kazakhstan.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/mansfieldite.pdf

Named for the type locality at Mina Ojuela in Mapimi, Durango, Mexico. Mapimite is a rare mineral that occurs only at its type locality and a newer locality in Greece and is found in oxidized arsenic-bearing polymetallic ore deposits of hydrothermal origin. Associated minerals include scorodite, adamite, smithsonite, and limonite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/mapimite.pdf