الصفحة الرئيسية > Term: dull attritus
dull attritus
A field term denoting the degree of luster of attrital coal as it compares to the brilliant luster of vitrain associated in the same locality. Compare: bright attritus.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
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المنشئ
- ed.young
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(Milwaukee, United States)