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Namansilite

Named for the composition of sodium, also called natrium (na), manganese (man), and silicon (sil). Namansilite is a rare mineral that occurs in Russia, Italy, Australia, as well as in newer localities in Germany, Japan, and Romania. It can be found in manganese and sodium-rich sediments that have been metamorphosed and oxidized.

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

Namibite

Named for the Namib Desert and the country of its discovery, Namibia. Namibite is a rare secondary mineral that occurs in bisumith-rich polymetallic hydrothermal deposits and in granite pegmatites. Localities include additionally in the United States, Canada, Australia, the Czech Republic, Germany, and England. Namibite occurs with bismuth, bismutite, wittichenite, bismite, bismutostiboconite, bismutoferrite, clinobisvanite, pucherite, beyerite, schumacherite, mixite, eulytite, and chrysocolla.

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

Narsarsukite

Named for the type locality at the Narssârssuk pegmatite in Greenland. Additional localities for Narsarsukite include in Russia, Norway, Germany, the United States, Canada, Niger, and Morocco as well as a few others. At the type locality, Narsarsukite occurs in pegmatite. Other occurrences include in quartz veins cutting limestone at a Montana, USA locality, and in hornfels, igneous breccias, and marble xenoliths in the Mont Saint-Hilaire complex.

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

Natrochalcite

Named for the sodium and copper in the composition after the Latin natrium, for “sodium,” and the Greek chalkos, for “copper.” Natrochalcite is a rare mineral that occurs in arid regions in oxidized copper deposits. It is found in Chile, Italy and the United States only. Natrochalcite is lightly soluble in water.

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

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