GRD043US1
WMS-06_S1
Syenite
Mesozoic › Jurassic › Middle Jurassic
161.0
-
176.0
0
Ritter 154 › Cabinet 29 › Drawer E
porphyritic quartz syenite
pink, coarse-grained, porphyritic quartz syenite
Loiselle (1978) description: perthitic alkali feldspar in a matrix of feldspar, quartz, mafics (primarily hornblende, some biotite). Age (~168) based on ages in Moat Volcanics study by Van Fossen and Kent (1990)
White Mtn Series
New Hampshire
Belknap Mtn, near Minge Cove on Hwy 11
Latitude: 43.5375°
Longitude: -71.2845°
