A Geoscience Digital Image Library

TitleBasalt from Vantage
DescriptionThis is a typical basalt: dark colored and fine grained. The minerals present cannot be identified by looking at this hand specimen. Geologists use a sort of deductive reasoning: they know what minerals are present because they can identify this as a basalt. Even using a microscope, minerals are hard to identify. Most of this rock is exceptionally fine grained but it does contain a few coarser lathes of plagioclase and clinopyroxene.
LocationUSA ▹ Washington ▹ Kittitas. Near Vantage.
PhotographerNessa Eull. 2001-05-15.
CollectionWard’s University Rock Collection #127.
Key wordsbasalt, Washington
Tech details919 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens.
GeoDIL number455