Cranbrook Institute of Science

by CranbrookScience

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0:20 Pele's Hair CranbrookScience 48 views 2 months ago Pele's hair is natural volcanic fiberglass formed by wind blowing through hot fountains of lava -- stretching it into thin strands of yellow glass up to 2m in length. It is...
0:36 Watersmeet Gneiss CranbrookScience 27 views 2 months ago Gneiss is a high grade metamorphic formed by the deep burial and heating of its pre-existing parent rock. This specimen of the Watersmeet Gneiss is from bedrock exposures n...
0:44 Acasta Gneiss CranbrookScience 40 views 2 months ago Gneiss is a high grade banded metamorphic formed by the deep burial and heating of its pre-existing parent rock. This specimen the Acasta Gneiss from the NW territories of ...
0:24 Amythest CranbrookScience 30 views 2 months ago This magnificent mass of amethyst quartz crystals formed from hydrothermal solution in a gas cavity in volcanic rocks, near Minas Gerais in Brazil. This type of crystal fil...
0:44 Pa Hoe Hoe CranbrookScience 21 views 2 months ago Pa Hoe Hoe is a Hawaiian term meaning smooth or satin-like in reference to the smooth ropey textured surface of this volcanic rock. Geologists also use the native Hawaiian ...
0:45 Amygdaloidal Basalt CranbrookScience 46 views 2 months ago This basalt specimen is a volcanic rock from the Keweenaw Peninsula's Poratge Lake volcanic series. It formed from lava flows associated with continental rifting in the mid...
0:25 Pillow Lava CranbrookScience 18 views 2 months ago This basalt pillow lava formed from an eruption on the sea floor at a mid-ocean ridge in the central equatorial Pacific Ocean around 200 million years ago. It was eventuall...
0:20 Hot Springs Quartz CranbrookScience 17 views 2 months ago These spectacular quartz crystals formed from hydrothermal solutions within voids in quartz sandstones in the central fold belt of the Ouchita Mountains (an extension of th...
0:47 Bishop Tuff CranbrookScience 14 views 2 months ago The Bishop tuff -- formed from the fusion of a slurry of hot gas, rhyolite ash, pumice and glass resulting from a tremendous explosive volcanic eruption 760,000 years ago. ...
0:48 Komatiite CranbrookScience 28 views 2 months ago This komatiite from southern Africa is one the Earth's oldest volcanic rocks. It formed from extremely hot lava (~1600° C) 3.6 billion years ago. It is dominated Fe & Mg ri...

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About Cranbrook Institute of Science

science.cranbrook.edu/

by CranbrookScience

Latest Activity

Mar 27, 2012

Date Joined

Nov 13, 2009

Location

Bloomfield Hills

Country

United States

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