01 n. A rare mineral of resinous luster and high specific gravity. It is a tantalate of calcium, and occurs in octahedral crystals usually very minute.
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1.
A rare mineral of resinous luster and high specific gravity. It is a tantalate of calcium, and occurs in octahedral crystals usually very minute.
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2.
A minute inclosed crystal, often observed when minerals or rocks are examined in thin sections under the microscope.(Min.)