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Feldspar Group from
Griggstown Mine (Franklin Mine), Griggstown, Somerset Co., New Jersey, USA

Description
Comments:Occasionally occurred as crystals.
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:NJ State Geol. Ann. Rpt. (1906):138;The Minerals of NYC & Its Environs, NY Min. Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 35. .
Data
Mineral Data:Click here to view Feldspar Group data
Locality Data:Click here to view Griggstown Mine (Franklin Mine), Griggstown, Somerset Co., New Jersey, USA
Nearest other occurrences of Feldspar Group
10.2km (6.3 miles) Margerum Brothers Quarry, West Windsor Township, Mercer Co., New Jersey, USA
21.7km (13.5 miles) Haggerty's farm explorations, Warrenville, Allamuchy Township, Warren Co., New Jersey, USA
22.1km (13.7 miles) American Mine (Alpha Copper Mine; Bridgewater Mine; Somerville Mine; Somerville deposit), Bridgewater Township, Somerset Co., New Jersey, USA
35.3km (21.9 miles) Hornerstown, Upper Freehold Township, Monmouth Co., New Jersey, USA
43.7km (27.1 miles) Pattenburg Quarry, Pattenburg, Bethlehem Township, Hunterdon Co., New Jersey, USA
44.9km (27.9 miles) Bethlehem Mine (Swayze Mine), West Portal, Bethlehem Township, Hunterdon Co., New Jersey, USA
49.5km (30.7 miles) Crane Mine, Mount Olive, Mount Olive Township, Morris Co., New Jersey, USA
50.1km (31.1 miles) Dickerson Mine, Succasunna, Randolph Township, Morris Co., New Jersey, USA
50.1km (31.1 miles) Stirling Mine, Irondale, Randolph Township, Morris Co., New Jersey, USA
51.9km (32.3 miles) Byram Mine, Randolph Township, Morris Co., New Jersey, USA
52.1km (32.3 miles) Thomas Fanning's Quarry, Dover, Morris Co., New Jersey, USA
52.2km (32.4 miles) Swede's Mine (Sweed's Mine), Dover, Morris Co., New Jersey, USA
53.1km (33.0 miles) I-80 roadcut, Mt Arlington, Morris Co., New Jersey, USA
53.8km (33.4 miles) Day Mine, Hackettstown, Independence Township, Warren Co., New Jersey, USA
53.8km (33.4 miles) Mt Pleasant Mine, Dover, Morris Co., New Jersey, USA
54.0km (33.6 miles) King Mine, Ledgewood, Roxbury Township, Morris Co., New Jersey, USA
54.1km (33.6 miles) Oxford, Warren Co., New Jersey, USA
54.4km (33.8 miles) Hude Mine (Stanhope Mine), Stanhope, Byram Township, Sussex Co., New Jersey, USA
54.9km (34.1 miles) Unidentified mine dump material, Allamuchy Township, Warren Co., New Jersey, USA
55.2km (34.3 miles) French's Mine, Waterloo, Byram Township, Sussex Co., New Jersey, USA
55.7km (34.6 miles) Lake View Mine, Lake Hopatcong, Roxbury Township, Morris Co., New Jersey, USA
56.0km (34.8 miles) Haggerty Mine, Stanhope, Byram Township, Sussex Co., New Jersey, USA
56.5km (35.1 miles) Cascade Mine (Smith Mine), Stanhope, Byram Township, Sussex Co., New Jersey, USA
56.7km (35.2 miles) Beach Glen Mines (Beach Glenn Mine), Hibernia, Rockaway Township, Morris Co., New Jersey, USA
57.5km (35.7 miles) Mount Hope Mines (Mt Hope Mines), Mt Hope, Rockaway Township, Morris Co., New Jersey, USA
58.1km (36.1 miles) Beach Mine, Rockaway Borough, Morris Co., New Jersey, USA
58.3km (36.2 miles) Hibernia Mine, Hibernia, Rockaway Township, Morris Co., New Jersey, USA
58.5km (36.4 miles) Lake Valhalla Quarry (Gordon's Crystalline Limestone Quarry), Montville Township, Morris Co., New Jersey, USA
58.9km (36.6 miles) Marble Mountain prospect, Marble Mtn, Phillipsburg, Warren Co., New Jersey, USA
59.3km (36.9 miles) Roadcut, Phillipsburg, Warren Co., New Jersey, USA
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