geodil.jpg

A Geoscience Digital Image Library

812.jpg
TitleMagnesite
DescriptionThis white mineral is magnesite, MgCO3 (magnesium carbonate). Magnesite forms commonly by alteration of magnesium-rich rocks during low grade metamorphism. It is closely related to calcite (but contains magnesium instead of calcium) and the two minerals would be hard to tell apart, except that calcite reacts vigorously to dilute hydrochloric acid. Magnesite may sometimes be confused with dolomite, another carbonate mineral. This specimen is from Gabbs, Nevada, where magnesite was mined during World War II. It is 9 cm across.
LocationUSA ▹ Nevada. Near Gabbs.
PhotographerDarla Sondrol. 2001-06-20.
CollectionUniversity of North Dakota Mineralogy Collection #713.
Key wordsmagnesite, Nevada, Gabbs
Tech details555 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number812