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Case Quarries, Portland, Middlesex Co., Connecticut, USA

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List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts
Bismuthinite2.DB.05
Chalcopyrite2.CB.10a
Cuprobismutite2.JA.10a
Pyrite2.EB.05a
Group 4 - Oxides and Hydroxides
Bismite4.CB.60
Columbite-(Fe)4.DB.35
Goethite4.00.
Liandratite4.DH.35
Opal4.DA.10
var: Opal-AN4.DA.10SiO2 · nH2O
Petscheckite ?4.DH.35
Pyrolusite ?4.DB.05
Quartz4.DA.05
var: Milky Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Samarskite-(Y)4.DB.25
Uraninite4.DL.05
Uranpyrochlore (of Hogarth 1977)4.DH.15
Group 5 - Nitrates and Carbonates
Bismutite5.BE.25
Group 8 - Phosphates, Arsenates and Vanadates
Autunite8.EB.05
Fluorapatite8.BN.05
var: Mn-bearing Fluorapatite8.BN.05Ca5(PO4)3F
Meta-autunite8.EB.10
Metatorbernite8.EB.10
Monazite-(Ce)8.AD.50
Phosphuranylite8.EC.10
Torbernite8.EB.05
Group 9 - Silicates
Albite9.FA.35
Almandine9.AD.25
Annite9.EC.20
Beryl9.CJ.05
var: Aquamarine9.CJ.05Be3Al2(Si6O18)
var: Heliodor9.CJ.05Be3Al2(Si6O18)
Bismutoferrite9.ED.25
Cordierite9.CJ.10
Epidote9.BG.05a
Microcline9.FA.30
Muscovite9.EC.15
Orthoclase ?9.FA.30
Schorl9.CK.05
Spessartine ?9.AD.25
Uranophane9.AK.15
Zircon9.AD.30
var: Cyrtolite9.AD.30Zr(SiO4)
Unclassified Minerals
Feldspar Group-
'var: Perthite'-
Hornblende-
Limonite-
'Manganese Oxides'-
'var: Manganese Dendrites'-
Tantalite ?-
Thorogummite-

References

Boos, M. F., E. E. Maillot and McHenry Mosier. (1949), Investigation of Portland Beryl-Mica District, Middlesex County, Conn. US Bureau of Mines Report of Investigation 4425.

Cameron, Eugene N., Larrabee David M., McNair, Andrew H., Page, James T., Stewart, Glenn W., and Shainin, Vincent E. (1954), Pegmatite Investigations 1942-45 New England. USGS Professional Paper 255.

Schooner, Richard. (1955): 90 Minerals from 1 Connecticut Hill. Rocks & Minerals: 30(7-8): 351-8.

Schooner, Richard. (1958), The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut.

Stugard, Frederick, Jr. (1958), Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.

Jones, Robert W., Jr. (1960), Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Fluorescent House. Branford, Connecticut.

Schooner, Richard. (1961), The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.

Ryerson, Kathleen. (1972): Rock Hound's Guide to Connecticut. Pequot Press.

Webster, Bud. (1978), Mineral Collector’s Field Guide Connecticut. Privately published.

Albini, Anthony J. (1979), Selected Pegmatite Quarries of the Central Connecticut Region. Masters thesis.

Webster, Bud and Bill Shelton. (1979), Mineral Collector’s Field Guide the Northeast.

Cross, L. M. (1987), A New Occurrence of Beryl at Case Quarries, Portland, Connecticut. Rocks & Minerals: 62(2): 116-7.

Robinson, George W. and Vandall T. King. (1988), What's New in Minerals? Mineralogical Record: 19(5): 332.

Weber, Marcelle H. and Earle C. Sullivan. (1995), Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 403.

Huff, R. C., R. G. Huff, J. Vajdak. (1996), An Occurrence of Bismutoferrite in Portland, Connecticut. Rocks & Minerals: 71(3): 197.

Vajdak, Josef. (1997), New Mineral Finds in 1996, News from Vajdak of Pequa Rare Minerals and Metals. Mineral News: 13:(3): 1,4,5.

Davis, Fred E. (2000), June 17th Field Trip: Case Prospects. Triassic Valley Bulletin, New Haven Mineral Club.

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