Biotite Gneiss
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Description:
A sample of biotite gneiss that contains predominating black mica with bits of white quartz and feldspar collected from Germantown, Pennsylvania.
- Site: PA; Philadelphia Co.; Philadelphia
- Site Number: NH73Na
- Dimensions: H-1.4 W-4.2 D-5 cm
- Rock type: Metamorphic
- Collection: Geology Collection
- Object Name: Metamorphic Rock
- Object Id: GR462
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