A Geoscience Digital Image Library

TitleQuartz with dolomite
DescriptionThis sample contains white quartz, SiO2 (silicon dioxide), and brown dolomite, CaMg(CO3)2 (calcium magnesium carbonate). Both are common minerals. Quartz is often white (or clear), but this hue of brown is a bit uncommon for dolomite. The quartz crystals in this sample have quartz's typical hexagonal prismatic shape. Dolomite typically forms rhombohedrons but some crystals (such as the ones in this specimen) curve into elongate saddle-shaped crystals. This specimen is 12.5 cm across.
LocationHungary. Near Felsobanya.
PhotographerDarla Sondrol. 2001-06-19.
CollectionUniversity of North Dakota Mineralogy Collection #1880.
Key wordsquartz, dolomite, Hungary
Tech details654 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number788