GRD0205S0
M-13
Schist
Unknown
None
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1
Ritter 154 › Cabinet 14 › Drawer D
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Medium-sized sample of Pyrophyllite-magnetite-quartz-muscovite (trace). Well-foliated (~radiating lamellae), coarse- to very coarse-grained (blades) of pyrophyllite. Amphibole (or staurolite?) porphyroblasts.
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Pyrophyllite (low relief) and orthopyroxene (hihg relief)
2.5
plane
Pyrophyllite (low relief) and orthopyroxene (high relief)
2.5
crossed
Orthopyroxene (showing an increase in birefi. colors)
2.5
crossed
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scan
crossed
GRD0205T0: 30% pyrophyllite, 30% orthopyroxene (?) (Cut at an angle revealing biref. ~0.03 to 0.04), 15% amphibole, 15% (first order greys), 5% chlorite (?) (greenish), 5% opaques. (C. Eichler)
N/A
N/A