DescriptionPotassium feldspar 3.jpg English: A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical...
at URL: https://www.flickr.com/photos/jsjgeology/48674143001/ operator: Flickr URL: https://live.staticflickr.com/65535/48674143001_d350d8c313_o.jpg...
com/photos/jsjgeology/50903892792/ operator: Flickr URL: https://live.staticflickr.com/65535/50903892792_1b407a011b_o.jpg determination method or standard: SHA-1...
DescriptionRubies encased in K-feldspar in fuchsite-rich matrix (Precambrian, eastern Brazil) 3.jpg English: Potassium feldspar-encased rubies in a fuchsite-rich...
Map 3,page 21- Environmental analysis record for Glass Butte geothermal interest area, central Oregon (IA environmentalana04davi) (page 31 crop).jpg....
cm across) This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic...
described at URL: https://www.flickr.com/photos/jsjgeology/36196492393/ operator: Flickr URL: https://live.staticflickr.com/4381/36196492393_6138565817_o.jpg...
at URL: https://www.flickr.com/photos/jsjgeology/51364021452/ operator: Flickr URL: https://live.staticflickr.com/65535/51364021452_02f3178ba1_o.jpg...
at URL: https://www.flickr.com/photos/jsjgeology/48674314187/ operator: Flickr URL: https://live.staticflickr.com/65535/48674314187_802ca4d80f_o.jpg...
at URL: https://www.flickr.com/photos/jsjgeology/48673804363/ operator: Flickr URL: https://live.staticflickr.com/65535/48673804363_667a62c927_o.jpg...
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