
Uncertain fine-grained rock or mineral-bearing specimen
Indeterminate; possible quartz- or feldspar-bearing matrix with reflective grains
AI-generated identification · may be incorrectThe image is highly out of focus, showing a dark gray matrix crossed by a narrow vein or band and scattered pale, yellow, and reddish grains. Hardness, luster, cleavage, and crystal structure cannot be reliably determined from this view.
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