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JeffersoniteJeffersonite is a dark green pyroxene mineral, a manganese zinc enriched variety of augite (Ca(Mn,Zn,Fe)Si2O6), sometimes compared to aegirine. Jeffersonite is not a recognized mineral name. Additional recommended knowledgeIt occurs in pegmatites where it can form crystals up to 30 cm long and in the contact metamorphic zone between limestone and various intrusive rocks. It is reported from the Sterling Hill mine, Franklin, New Jersey, in South Australia and Sweden. Categories: Calcium minerals | Manganese minerals | Iron minerals | Zinc minerals | Silicate minerals |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Jeffersonite". A list of authors is available in Wikipedia. |