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A Geoscience Digital Image Library

305.jpg
TitleAlmandine
DescriptionThis specimen contains red almandine,whitish-gray feldspar and white quartz. Almandine is iron-aluminum garnet, having ideal composition Fe3Al2Si3O12. It may contain magnesium, manganese or calcium as significant impurities. Like all garnets, almandine forms dodechahedral (12 sided) crystals whith each face having a rhombohedral shape. This sample is about 11 cm across. The white on the lower left is paint used to label the specimen.
PhotographerNessa Eull. 2001-04-09.
CollectionUniversity of North Dakota Mineralogy Collection #3138.
Key wordsalmandine
Tech details915 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number305