#chlorite

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This rock is a quartzofeldspathic gneiss from Surebridge Mine in Harriman State Park, NY. What’s so cool about this is you can see the hydrothermal process which alters biotite to chlorite. The large brown grain being biotite, and the purple/blue/green in the center being chlorite. (10x XPL)

#geology #mineralogy #geochemistry #minerals #earth science #geologist #optical mineralogy #physics #volcano #aestheitcs #petrology #chemistry #optmin #nature #new york #hudson higlands #harriman state park #granite #gneiss #biotite #biotite mica #chlorite #chlorite mica #quartzofeldspathic gneiss 
Optical Mineralogy@optical-mineralogy
Mon, 26 Nov 2018 00:38:07
Himalayan Quartz with Chlorite soaking up the sun and view in Malibu with @themineralcollective ////

Himalayan Quartz with Chlorite soaking up the sun and view in Malibu with @themineralcollective///// 

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#himalayan quartz #quartz #malibu #chlorite #quartz chlorite 
Mineraliety@Mineraliety
Mon, 04 Dec 2017 15:34:46
hematitehearts: Smoky Quartz with Sprinkling of Chlorite Locality:  Galenstock, Urseren, Uri, Switze

hematitehearts:

Smoky Quartz with Sprinkling of Chlorite

Locality:  Galenstock, Urseren, Uri, Switzerland


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#smoky quartz #chlorite #switzerland 
Mineralogy@Mineralogy
Tue, 16 Nov 2021 09:56:36
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