A Geoscience Digital Image Library

TitleMarble containing phlogopite and chondrodite
DescriptionMarble is a general name for rocks formed by metamorphism of a limestone or dolostone. Marbles are dominated by calcite or dolomite, but some contain any of a number of interesting accessory minerals. This sample contains very light brown flakes of phlogopite (Mg-rich biotite) and darker brown granular grains of chondrodite (an Mg-Fe mineral related to olivine).
PhotographerDarla Sondrol. 2001-06-12.
CollectionUniversity of North Dakota Mineralogy Collection #655.
Key wordsmarble, phlogopite, chondrodite
Tech details730 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number724