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Colemanite (Ca 2 B 6 O 11 ·5H 2 O) [6] or (CaB 3 O 4 (OH) 3 ·H 2 O) [4] is a borate mineral found in evaporite deposits of alkaline lacustrine environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite.
Psychology Today is an American media organization with a focus on psychology and human behavior. The publication began as a bimonthly magazine, which first appeared in 1967. The print magazine's reported circulation is 275,000 as of 2023. [ 2 ]
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, Li Al(Si O 3) 2, and is a commercially important source of lithium.It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size.
Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within Earth's mantle . Formation occurs at depths between 150 and 450 kilometres (93 and 280 mi), potentially from anomalously enriched exotic mantle compositions, and they are erupted rapidly and violently, often ...
Dementia impacts millions of older adults, but researchers are still learning how, exactly, to prevent this devastating illness. Now, research suggests that increasing your intake of one specific ...
The Mineralogical Record was first published in 1970, on the initiative of John S. White, a curator in the Smithsonian Institution's Department of Mineralogy, with the aim of filling the gap between scientific mineralogy journals (which began at that time to look more like solid state physics and chemistry than conventional descriptive mineralogy) and purely amateur magazines. [1]
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A worker samples potash minerals at a mine in Saskatchewan. Note the thin interbeds of grey claystone. Note the thin interbeds of grey claystone. The contact between the Prairie Evaporite Formation and the underlying Keg River Formation (in the north) and Winnipegosis Formation (in the south) is sharp and conformable.