GRD02NBS0
Calif 177
Monzonite
Mesozoic › Cretaceous
65.5
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145.5
5
Ritter 154 › Cabinet 3 › Drawer F
Quartz
Large sample of quartz monzonite. Original description: El Capitan Quartz Monzonite. Large slab on roadside. Quartz orthoclase plagioclase with minor sphene and nice zoning, biotite(some altering to chlorite).
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California
Yosemite, South side of highway across from El Capitan, Mariposa county
Latitude: 37.707°
Longitude: -119.614°
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N/A
GRD02NBT0: Calif 177 (I): 45 Plag, 15 Quartz, 35 K-spar, 5 Biotite, some Monazite. Myrmekitic textures and zoned Plagioclase with Carslbad-Albite and polysynthetic twinning.
GRD02NBT1: Calif 177 (II): 45 Plag, 15 Quartz, 35 K-spar, 5 Biotite, some Monazite. Myrmekitic textures and zoned Plagioclase with Carslbad-Albite and polysynthetic twinning.
GRD02NBT2: Calif 177 (III): 45 Plag, 15 Quartz, 35 K-spar, 5 Biotite, some Monazite. Myrmekitic textures and zoned Plagioclase with Carslbad-Albite and polysynthetic twinning.
GRD02NBT3: Calif 177 (4): 45 Plag, 15 Quartz, 35 K-spar, 5 Biotite, some Monazite. Myrmekitic textures and zoned Plagioclase with Carslbad-Albite and polysynthetic twinning.
GRD02NBT4: Calif 177 (5): 45 Plag, 15 Quartz, 35 K-spar, 5 Biotite, some Monazite. Myrmekitic textures and zoned Plagioclase with Carslbad-Albite and polysynthetic twinning.
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