الصفحة الرئيسية > 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.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
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- ed.young
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