홈 > Term: pinguite
pinguite
A former name for nontronite, a monoclinic mineral, Na0.33Fe3+ 2(Si,Al)4O10(OH)2.nH2O ; smectite group; expansive, a swelling clay; earthy; occurs in vesicles and veins in weathered basalt and as an alteration product of volcanic glass.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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(V.I.P) 21084 포인트 - 100% positive feedback
(Milwaukee, United States)
