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Simpson Quarry, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
Two parallel quarries and some nearby prospects in granite pegmatites about which surprisingly very little has been written. One of the quarries could be the "new" Wiarda quarry, that Watts (1916) describes as:
"located in a feldspar deposit on a north and south ridge on the outskirts of South Glastonbury. Several irregular dikes are exposed, but little actual development work has been done to indicate the continuity of any particular dike or to ascertain the width of the bands rich in feldspar. A good quality of feldspar and graphic granite have been obtained from this property and 2,000 tons were reported as being quarried in 1911."
The only descriptions using the name Simpson are by Hiller (1967), who writes about the good beryl, muscovite and microcline crystals he collected, and Betts (1999), who mentions good quality aquamarine and "bright blue-green hyalite opal". Scattered but well-formed microlite crystals are also noteworthy.
Mindat Articles
Field trip report: Simpson Quarry by Matthew KimballMineral List
40 entries listed. 28 valid minerals. 1 erroneous literature entry.
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References
Watts, A. S. (1916): The Feldspars of the New England and North Appalachian States. U. S. Bureau of Mines Bulletin 92.
Hiller, John. (1967): Collecting at Simpson Quarry. Rocks and Minerals: 42(12): 938-939.
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 398.
Stugard, Frederick, Jr. (1958): Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.
Betts, John. (1996): The Quarries and Minerals of South Glastonbury, Connecticut. George F. Kunz Competition Papers 1996. New York Mineralogical Club.
Betts, John. (1999): The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks and Minerals: 74(2): 110-121.
Hiller, John. (1967): Collecting at Simpson Quarry. Rocks and Minerals: 42(12): 938-939.
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 398.
Stugard, Frederick, Jr. (1958): Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.
Betts, John. (1996): The Quarries and Minerals of South Glastonbury, Connecticut. George F. Kunz Competition Papers 1996. New York Mineralogical Club.
Betts, John. (1999): The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks and Minerals: 74(2): 110-121.
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Locality Updated: Larson Exploration Prospect, Menominee Range, Florence Co., Wisconsin, USAFrom Bill Cordua, 19th Jun 2013 03:45:17