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

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Detailed Mineral List:
Albite
Formula: Na(AlSi3O8)
Habit: mostly anhedral grains, rare blocky pocket crystals
Colour: white
Description: Largely a rock-forming component of the pegmatites. Rarely lining small pockets.
Reference: 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.; Stugard, Frederick, Jr. (1958), Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.
Photo: © Mike Polletta. Albite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Almandine
Formula: Fe2+3Al2(SiO4)3
Habit: trapezohedral
Colour: maroon
Description: Crystals usually very small and concentrated near border zones, but known to at least 3 cm. Not analyzed, but XRF data of many district pegmatitic garnets shows them to be mostly almandine but with a significant spessartine component.
Reference: 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.
Photo: © Andrew Kruegel 2007. Almandine from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Habit: anhedral tabular
Colour: black
Description: fka biotite
Reference: 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.
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Description: see meta-autunite
Reference: 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.
Beryl
Formula: Be3Al2(Si6O18)
Habit: elongated to short hexagonal prisms
Colour: colorless, yellow, green, blue
Description: Present in all the pegmatites, but particularly in the number 4 pegmatite where it occurs as isolated or clusters of short hexagonal prisms, with basal pinacoids up to 15 cm across, terminated in the quartz core, where dozens of molds of removed beryls can be seen. These beryls have a subhedral, tapered "root" within the wall zone, with the crystals' c axes oriented subnormal to the steeply-dipping pegmatite contact. Cross (1987) reports individual crystals weighing over 22 kilograms.
Reference: 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. (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.; Cross, L. M. (1987), A New Occurrence of Beryl at Case Quarries, Portland, Connecticut. Rocks & Minerals: 62(2): 116-7.
Photo: © 2005 Steve Bonney. Beryl from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Habit: hexagonal prisms with pinacoids
Colour: blue-green to blue
Description: Present in all the pegmatites, but particularly in the number 4 pegmatite where it occurs as isolated or clusters of short hexagonal prisms, with basal pinacoids up to 15 cm across, terminated in the quartz core, where dozens of molds of removed beryls can be seen. These beryls have a subhedral, tapered "root" within the wall zone, with the crystals' c axes oriented subnormal to the steeply-dipping pegmatite contact. Cross (1987) reports individual crystals weighing over 22 kilograms.
Reference: 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. (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.; Cross, L. M. (1987), A New Occurrence of Beryl at Case Quarries, Portland, Connecticut. Rocks & Minerals: 62(2): 116-7.
Photo: © 2012 Anthony Albini. Aquamarine from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Beryl var: Heliodor
Formula: Be3Al2(Si6O18)
Habit: elongated to short hexagonal prisms
Colour: yellow
Description: Much less common than the green and blue varieties.
Reference: 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. (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.
Bismite
Formula: Bi2O3
Habit: coatings
Colour: yellow
Description: as coatings on feldspar and quartz, an alteration product of bismutite.
Reference: 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.; Huff, R. C., R. G. Huff, J. Vajdak. (1996), An Occurrence of Bismutoferrite in Portland, Connecticut. Rocks & Minerals: 71(3): 197.; Rocks & Minerals (1955) 30:351-358
Photo: © Andrew Kruegel 2008. Bismite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Bismuthinite
Formula: Bi2S3
Habit: platy to prismatic, striated masses and subhedral crystals
Colour: gray
Description: platy masses to striated crystals typically with green and yellow secondaries, in iron-stained pegmatite due to oxidation of associated pyrite.
Reference: 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.
Photo: © Steve Bonney 2006. Bismuthinite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Bismutite
Formula: (BiO)2CO3
Habit: massive, coatings
Colour: green
Description: Alteration of bismuthinite and associated with yellow bismite and goethite (from oxidation of associated pyrite). Schooner (1958) says the identity of this material was confirmed by an x-ray study, made at Harvard University by Mary E. Mrose.
Reference: 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.; Vajdak, Josef. (1997), New Mineral Finds in 1996, News from Vajdak of Pequa Rare Minerals and Metals. Mineral News: 13:(3): 1,4,5.
Photo: © 2006 Peter Cristofono. Bismutite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Bismutoferrite
Formula: Fe3+2Bi(SiO4)2(OH)
Habit: massive coatings
Colour: green
Description: Associated with bismuthinite and pyrite with secondary bismite, bismutite (some or all may in fact be bismutoferrite) and goethite staining pegmatite matrix.
Reference: 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.
Photo: © 2010 Harold Moritz . Bismutoferrite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Chalcopyrite
Formula: CuFeS2
Description: Included in a list by Schooner (1958) with no details, but very plausibly in small quantities.
Reference: 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.
Columbite-(Fe)
Formula: FeNb2O6
Habit: tabular to elongated prisms
Colour: black with iridescence
Description: Found in all the pegmatites usually to a couple of cm, the crystals typically subhedral when in matrix, euhedral crystals from pockets very rare but can reach 3 cm.
Reference: 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.
Photo: © 2013 Harold Moritz. Columbite-(Fe) from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Habit: elongated prisms
Colour: dark purple to gray (altered to gray-green on surface)
Description: Crystals to a few cm long found in a coarse-grained phase (albite, smoky quartz, cordierite, biotite) of the metamorphic rock surrounding the pegmatites.
Reference: Collection of David and Brenda Bodnar
Photo: © 2010 Harold Moritz . Cordierite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Cuprobismutite
Formula: Cu8AgBi13S24
Habit: massive, coatings
Description: Associated with bismuthinite and pyrite with secondary bismite, bismutite (some or all may in fact be bismutoferrite) and goethite staining pegmatite matrix.
Reference: Vajdak, Josef. (1997), New Mineral Finds in 1996, News from Vajdak of Pequa Rare Minerals and Metals. Mineral News: 13:(3): 1,4,5.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Habit: elongated, striated, prismatic
Colour: dark olive green
Description: Found in quartz-rich, retrograde metamorphic segregations in the Glastonbury gneiss hosting the pegmatites. Crystals to 4 cm.
Reference: Januzzi, Ronald E. (1976). Mineral Localities of Connecticut and Southeastern New York State. Mineralogical Press/Taylor Associates, Danbury, Connecticut.; Dave Bodnar collection.
Photo: © 2014 Harold Moritz. Epidote from Case Quarries, Portland, Middlesex Co., Connecticut, USA
'Feldspar Group'
Habit: anhedral to subhedral blocky
Colour: white, tan, pale pink
Description: aka - microcline. A major rock-forming component of the pegmatites, the largest and best crystals terminate in the quartz cores and can reach over 20 cm.
Reference: 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.
'Feldspar Group var: Perthite'
Habit: anhedral to subhedral blocky
Colour: white, tan, pale pink
Description: aka - microcline. A major rock-forming component of the pegmatites, the largest and best crystals terminate in the quartz cores and can reach over 20 cm.
Reference: 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.
Fluorapatite
Formula: Ca5(PO4)3F
Habit: massive
Colour: gray
Fluorescence: yellow
Description: Typically massive and inconspicuous, revealed by its yellow SW UV fluorescence.
Reference: 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.
Photo: © Andrew Kruegel 2008. Fluorapatite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Fluorapatite var: Mn-bearing Fluorapatite
Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH)
Habit: massive
Colour: gray
Fluorescence: yellow
Description: Typically massive and inconspicuous, revealed by its yellow SW UV fluorescence.
Reference: Jones, Robert W. Jr., (1960), Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Fluorescent House. Branford, Connecticut.
Goethite
Formula: α-Fe3+O(OH)
Habit: massive, earthy, coatings
Colour: brown
Description: From the oxidation of pyrite associated with bismuth minerals.
Reference: 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.
'Hornblende'
Habit: subhedral elongated prisms
Colour: black
Description: Rock-forming component of the host Glastonbury Gneiss.
Reference: 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.
Liandratite
Formula: U(Nb,Ta)2O8
Habit: massive
Colour: yellow
Description: Associated with petscheckite and columbite.
Reference: Personal collection of Fred E Davis, and EDS analysis
'Limonite'
Formula: (Fe,O,OH,H2O)
Description: See goethite.
Reference: 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.
'Manganese Oxides'
Habit: dendritic coatings
Colour: black to dark brown
Reference: Harold Moritz collection
Photo: © Steve Bonney 2006. Manganese Oxides from Case Quarries, Portland, Middlesex Co., Connecticut, USA
'Manganese Oxides var: Manganese Dendrites'
Habit: dendritic coatings
Colour: black to dark brown
Reference: Harold Moritz collection
Photo: © 2009 Harold Moritz . Manganese Dendrites from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6-8H2O
Habit: coatings
Colour: pale yellow
Fluorescence: bright green
Description: Alteration of uraninite. (All "autunite" in collections has dehydrated to meta-autunite.)
Reference: 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.
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Habit: coatings of micro crystals
Colour: green
Description: Alteration of uraninite. (All "torbernite" in collections has dehydrated to metatorbernite).
Reference: 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.
Microcline
Formula: K(AlSi3O8)
Habit: anhedral to subhedral blocky
Colour: white, tan, pale pink
Description: aka - perthite. A major rock-forming component of the pegmatites, the largest and best crystals terminate in the quartz cores and can reach over 20 cm.
Reference: 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.
Monazite-(Ce)
Formula: Ce(PO4)
Habit: subhedral to euhedral wedge-shaped
Colour: brown
Description: Crystals typically less than 2 cm and usually found loose in the dumps using gamma-ray detectors.
Reference: Fred E Davis - collection
Photo: © Fred E Davis 2006. Monazite-(Ce) from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: tabular
Colour: silvery, gray-green, rum
Description: Rarely in euhedral crystals, mostly cleavages of subhedral crystals to 20 cm.
Reference: 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.
Photo: © 2009 Harold Moritz . Muscovite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Opal
Formula: SiO2 · nH2O
Description: see Opal-AN variety.
Reference: Jones, Robert W. Jr., (1960), Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Fluorescent House. Branford, Connecticut.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Habit: coatings
Description: Colorless coatings found only by their bright green SW UV fluorescence.
Reference: Jones, Robert W. Jr., (1960), Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Fluorescent House. Branford, Connecticut.
Orthoclase
Formula: K(AlSi3O8)
Description: Erroneously reported by old literature or casual collectors. Microcline has been verified by Cameron et al (1954) and Stugard (1958) as the only potassium feldspar for the entire Middletown pegmatite district.
Reference: 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.
Petscheckite ?
Formula: UFe(Nb,Ta)2O8
Habit: massive
Colour: black
Description: Glassy metamict material associated with liandratite and columbite. Data required to substantiate this entry.
Reference: Found by Fred Davis
Photo: © Fred E. Davis. Petscheckite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Pyrite
Formula: FeS2
Description: Associated with bismuth minerals and altered to goethite.
Reference: Huff, R. C., R. G. Huff, J. Vajdak. (1996), An Occurrence of Bismutoferrite in Portland, Connecticut. Rocks & Minerals: 71(3): 197.
Pyrolusite
Formula: MnO2
Description: No pyrolusite dendrite or staining in a granite pegmatite in the world has been verified as pyrolusite. The name was a mistake in the nineteenth century which has been widely publicized.
Reference: 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.
Quartz
Formula: SiO2
Habit: mostly massive, rare as prismatic crystals
Colour: colorless, milky, smoky
Description: Overwhelmingly a rock-forming component of the pegmatites, but a few pocket crystals known.
Reference: 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.
Photo: © Adam Berluti. Quartz from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Quartz var: Milky Quartz
Formula: SiO2
Habit: massive
Colour: milky white
Description: Major rock forming component of the pegmatites, especially the core zones.
Reference: 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.
Quartz var: Smoky Quartz
Formula: SiO2
Habit: mostly massive, rarely prismatic
Colour: gray
Description: Overwhelmingly a rock-forming component of the pegmatites, but a few pocket crystals known.
Reference: Harold Moritz collection
Photo: © Matthew Kimball. Smoky Quartz from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Colour: black
Reference: Albini, Anthony J. (1979), Selected Pegmatite Quarries of the Central Connecticut Region. Masters thesis.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: elongated prisms
Colour: black
Description: Usually as elongated subhedral prisms, poorly terminated, to a few cms. Typically found in the fine-grained wall zones and like the beryls oriented with their long axis sub-perpendicular to the contact with the host gneiss.
Reference: 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.
Photo: © 2007 Steve Bonney. Schorl from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Spessartine ?
Formula: Mn2+3Al2(SiO4)3
Description: XRF analyses of many Middletown district pegmatites shows the majority to be almandine, though with significant spessartine component. No analyses verifying a spessartine from Case is documented.
Reference: 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.
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Description: Listed generically by the references as part of the columbite-tantalite series. No analyses of end-member tantalite from Case are known.
Reference: 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.; 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.
'Thorogummite'
Formula: (Th,U)(SiO4)1-x(OH)4x
Colour: pale yellow
Description: Specimen in the collection of Andrew Kruegel identified by SEM-EDS.
Reference: Specimen in collection of Andrew Kruegel
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Description: see Meta-torbernite
Reference: 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.
Photo: © Fred E Davis 2009. Torbernite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Uraninite
Formula: UO2
Habit: subhedral
Colour: black
Description: Typically as small (<0.5 cm) grains best found using gamma-ray detectors.
Reference: 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.
Photo: © Andrew Kruegel 2007. Uraninite from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Description: Alteration of uraninite, listed by Schooner (1958) with no details, but very plausible.
Reference: 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.
'Uranpyrochlore (of Hogarth 1977)'
Formula: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Description: Specimen in Andrew Kruegel collection identified by SEM-EDS.
Reference: Specimen in collection of Andrew Kruegel
Photo: © Andrew Kruegel 2009. Uranpyrochlore (of Hogarth 1977) from Case Quarries, Portland, Middlesex Co., Connecticut, USA
Zircon
Formula: Zr(SiO4)
Description: See cyrtolite variety.
Reference: 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.
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Habit: curved crystals
Colour: pale brown
Fluorescence: yellow
Description: Generally very small but euhedral crystals.
Reference: 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.
Photo: © Andrew Kruegel 2009. Cyrtolite from Case Quarries, Portland, Middlesex Co., Connecticut, USA

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.

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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.

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

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