GRD0210S0
M-53
Mafic
Precambrian › Proterozoic › Mesoproterozoic
1000.0
-
1600.0
1
Ritter 154 › Cabinet 14 › Drawer H
mafic
Altered mafic pegmatite. Coarse- to very coarse-grained. Hornblende-quartz. Miarolitic cavities are still present with nicely terminated crystals preserved. Original description: Metamorphosed pegmatite or granophyre of M50. Hbl-qtz-plag.
-
-
New York
Scotts Cars Russel Quad. Northwest Adirondacks
-
Serpentinization taking place along fractures
10.0
plane
Serpentinization taking place along fractures
10.0
crossed
-
scan
crossed
GRD0210T0: Scaly, resorbed minerals. Slight serpentinization/alteration taking place in large amphibole and along quartz fractures. 50% amphibole (green pleochroic; brown/green fractured?), 50% quartz. Trace serpentine. (C. Eichler)
N/A
N/A