- 行业: Mining
- Number of terms: 33118
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- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A monoclinic mineral, KAlSi<sub>3</sub>O<sub>8</sub>; feldspar group; prismatic cleavage; partly ordered, monoclinic potassium feldspar dimorphous with microcline, being stable at higher temperatures; also a general term applied to any potassium feldspar that is or appears to be monoclinic; e.g., sanidine, submicroscopically twinned microcline, adularia, and twinned analbite. It is a common rock-forming mineral and occurs esp. in granites, granite pegmatites, felsic igneous rocks, and crystalline schists, and is commonly perthitic.
Industry:Mining
A monoclinic mineral, KAlSi<sub>3</sub>O<sub>8</sub>; feldspar group; prismatic cleavage; partly ordered, monoclinic potassium feldspar dimorphous with microcline, being stable at higher temperatures; also a general term applied to any potassium feldspar that is or appears to be monoclinic; e.g., sanidine, submicroscopically twinned microcline, adularia, and twinned analbite. It is a common rock-forming mineral and occurs esp. in granites, granite pegmatites, felsic igneous rocks, and crystalline schists, and is commonly perthitic.
Industry:Mining
A monoclinic mineral, KFe(SO<sub>4</sub>)<sub>2</sub>.4H<sub>2</sub>O ; in soft, pale-green radiating clusters of prismatic laths and fine-grained crystalline crusts from decomposition of pyrite; associated with coquimbite, halotrichite, and roemerite on Calf Mesa, San Rafael Swell, UT.
Industry:Mining
A monoclinic mineral, KFe(SO<sub>4</sub>)<sub>2</sub>.H<sub>2</sub>O ; forms soft yellowish-green prismatic crystals and crusts.
Industry:Mining
A monoclinic mineral, KFe(SO<sub>4</sub>)<sub>2</sub>; at the United Verde copper mine, Jerome, AZ. Named for the local Yavapai Native Americans.
Industry:Mining
A monoclinic mineral, KFe<sub>2</sub>Al(Al<sub>2</sub>Si<sub>2</sub>)O<sub>10</sub>(F,OH)<sub>2</sub>; mica group.
Industry:Mining
A monoclinic mineral, KFe<sub>3</sub>AlSi<sub>3</sub>O<sub>10</sub>(OH,F)<sub>2</sub>; mica group; trioctahedral.
Industry:Mining
A monoclinic mineral, KHCO<sub>3</sub>; colorless, white, or yellow. Also spelled kalicine; kalicite.
Industry:Mining
A monoclinic mineral, KLiFeAl(AlSi<sub>3</sub>)O<sub>10</sub>(F,OH)<sub>2</sub>; mica group; basal cleavage; pale violet, yellowish or grayish brown; in granites, pegmatites, and greisens.
Industry:Mining
A monoclinic mineral, KLiMg<sub>2</sub>Si<sub>4</sub>O<sub>10</sub>F<sub>2</sub>; mica group; at Narsarsuk, Greenland, and Magnet Cove, AR. Also spelled tainiolite.
Industry:Mining
