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Nathan Hall Quarry (Clark Hill Quarry), East Hampton (Chatham), Middlesex Co., Connecticut, USA

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Latitude & Longitude (WGS84): 41° 35' 38'' North , 72° 32' 24'' West
Latitude & Longitude (decimal): 41.59389,-72.54000
GeoHash:G#: drkkt7cvz
Locality type:Quarry
Köppen climate type:Dfa : Hot-summer humid continental climate


The Nathan Hall Quarry (one of the quarries on Clark Hill) is located in the Meshomasic State Forest off of Woodchopper's Road. It is a small quarry in a zoned granite pegmatite and based on the few references, it appears to have operated completely before 1922. There is nothing specific in the mineralogical literature, but presumably it was quarried for feldspar and/or mica. The F. W. Beers County Atlas of Middlesex, Connecticut, published in 1874, shows a large rectangle of land north of Clark Hill Road owned by "N. Hall". The Hall Cemetery is on Clark Hill Road near the entrance to Woodchopper's Road. It is often incorrectly called the Nathan Hale Quarry (such as Schooner, circa 1980s) and is sometimes confused with the State Forest Quarry #1 just to the north.

Collecting is allowed only via permit issued by the Connecticut DEEP to educational organizations (schools, mineral clubs, etc.). See link below.

Besides the rock-forming albite, microcline and quartz, sharp muscovite crystals are very common and the large, dark almandine-spessartine garnets, although fairly rare, are noteworthy. XRF analyses of several garnets from Nathan Hall show them all to be almandine, but with a significant spessartine component. As a result, a black, probable manganese oxide, stain typical covers and surrounds these crystals. Annite (fka biotite) is also common, mostly in bladed crystals up to several feet long. Beryl is uncommon, but crystals can be large, gemmy, and terminated and vary in color from yellow through green to aqua. Zircon, uranium minerals (beautiful meta-autunite and metatorbernite halos around uranophane-altered uraninite), and fluorapatite are sprinkled throughout. There is schorl, plus interesting tapered pseudomorphs of muscovite after schorl. Schorl also occurs in the adjacent Littleton schist. Massive quartz, which encloses the sharp micas and matrix microclines, is very abundant at Hall, but good crystals are usually pocket micros. Although tiny columbites are common, large ones are very rare but well-formed. One find of monazite-(Ce) was confirmed by XRD and three tapiolite-(Fe) crystals were confirmed by Raman spectroscopy.

One mystery about this locality is the reported abundance of rose quartz by Foye (1922). Very little if any true rose quartz has been found here despite myriad field trips since the early 1990s (it is present at the nearby State Forest Quarry #1, which did not open until the early 1940s). One possible resolution is that the rose quartz is really from the small quarry in Cobalt along Great Hill Pond Brook that Hiller's 1971 collecting guide book calls the "Nathan Hale Quarry". The names Nathan Hale (the famous official State Hero) and Nathan Hall are commonly confused and Nathan Hall had several quarries, with the one in Cobalt thus possibly one if his also. This small quarry was described by Rice and Foye in their 1927 guide to Middletown area geology, though not given a name, nor did they mention rose quartz. However, Foye worked at Wesleyan University in Middletown and on display there at the Joe Webb Peoples Museum is a large specimen of rose quartz with the locality given as "Cobalt". It seems likely he may have confused the origin of the rose quartz (though the location of the Nathan Hall Quarry is correct in Foye (1922)), especially if Nathan Hall operated both quarries. Unfortunately, the quarry on Great Hill Pond Brook has been inaccessible for several decades.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


26 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Colour: white
Description: Euhedral crystals restricted to the lining of small pockets.
Reference: P Cristofono collection, 2007 Harold Moritz collection, 1991-2009
Almandine
Formula: Fe2+3Al2(SiO4)3
Habit: complex mix of forms, generally modified trapezohedrons
Colour: maroon
Description: 7 specimens were tested for Fe and Mn content using X-ray fluorescence. The Mn percentage of the total Fe+Mn content varied from 23 to 47%, indicating there were all almandine. Crystals are typically coated with dark, probable Mn oxides coating, but this does not prove they are spessartine.
Reference: Field collected by Harold Moritz, confirmed by XRF.
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Habit: elongated tabular subhedral
Colour: black
Description: Crystals apparently reached several dm long as they are typically found as fragments in the dump, sometimes interlayered with muscovite.
Reference: Field collected by Harold Moritz.
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Reference: P Cristofono collection, 2007
Beryl
Formula: Be3Al2(Si6O18)
Habit: elongated prisms with pinacoidal or somewhat rounded pyramidal terminations
Colour: yellow, pale green, aqua
Description: Crystals found frozen in fragments of the intermediate zone (quartz, albite, some muscovite) of the pegmatite.
Reference: LMSCC Newsletter, Sept. 2005 Harold Moritz collection, 1991-2009
Bismutite
Formula: (BiO)2CO3
Reference: David Busha collection
Columbite-(Fe)
Formula: FeNb2O6
Habit: skeletal, tabular, stout or elongated prisms
Colour: black with iridescence
Description: Wide variety of crystal habits, stout prisms reach a about 3 x 5 cm, while skeletal crystals intergrown with albite can reach 8 cm. Several crystals tested using XRD and Raman spectroscopy.
Reference: Field collected by Harold Moritz.
Fluorapatite
Formula: Ca5(PO4)3F
Habit: anhedral to subhedral grains
Colour: pale gray-green
Fluorescence: yellow
Description: subhedral grains can reach several cm
Reference: Harold Moritz collection
Foitite ?
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Habit: massive material, skeletal/interstitial in graphic granite
Colour: black
Description: Tested by Raman spectroscopy at the University of New Haven, spectrum was weak but consistent with foitite. Thin masses interstitial within microcline/quartz graphic granite, unusual as that association is typically barren of interesting minerals.
Reference: Fred E Davis Collection
Goethite
Formula: α-Fe3+O(OH)
Reference: Kevin Czaja Collection
Löllingite
Formula: FeAs2
Reference: David Busha collection; David Busha collection SEM-EDS by Kaygeedee Minerals
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6-8H2O
Habit: encrustations
Colour: yellow
Fluorescence: green
Description: excellent halos surrounding other uranium secondary minerals and altered uraninite.
Reference: Field collected by Harold Moritz.
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Habit: square tabular
Colour: green
Description: usually anhedral crusts and associated with other secondary U minerals
Reference: Field collected by Harold Moritz.
Microcline
Formula: K(AlSi3O8)
Habit: prismatic
Colour: tan
Description: rare in good crystals, some fragments found
Reference: Field collected by Harold Moritz.
Monazite-(Ce)
Formula: Ce(PO4)
Habit: tabular subhedral
Colour: brown
Description: One small glassy subhedral crystal found and confirmed by X-ray diffraction test.
Reference: Field collected by Harold Moritz, confirmed by XRD.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: tabular, pseudo-hexagonal
Colour: silver
Description: Anhedral in the intermediate zone, but euhedral along the contact of this zone with the quartz core. Also as fine-grained pseudomorphs after euhedral schorl.
Reference: LMSCC Newsletter, Sept. 2005 Harold Moritz collection, 1991-2009
Opal
Formula: SiO2 · nH2O
Habit: encrustations
Colour: colorless
Fluorescence: green
Description: inconspicuous unless illuminated by SW UV.
Reference: Field collected by Harold Moritz.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Habit: encrustations
Colour: colorless
Fluorescence: green
Description: inconspicuous unless illuminated by SW UV.
Reference: Field collected by Harold Moritz.
Quartz
Formula: SiO2
Colour: clear, white
Reference: LMSCC Newsletter, Sept. 2005 Harold Moritz collection, 1991-2009
Quartz var: Ferruginous Quartz
Formula: SiO2
Reference: P Cristofono collection, 2007
Quartz var: Rose Quartz
Formula: SiO2
Colour: pink
Description: Although reported by Foye (1922), no modern specimens found. Perhaps he was referring to the abundant ferruginous quartz.
Reference: LMSCC Newsletter, Sept. 2005 Foye, W. G. (1922): MINERAL LOCALITIES IN THE VICINITY OF MIDDLETOWN, CONNECTICUT. American Mineralogist, Volume 7, pages 4-12.
Quartz var: Smoky Quartz
Formula: SiO2
Colour: grey to black
Reference: Field collected by Harold Moritz.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: elongated prisms with shallow rhombohedral terminations
Colour: black
Description: generally anhedral to subhedral, crystals crumble readily. Euhedral crystals pseudomorphed by fine-grained muscovite are common.
Reference: LMSCC Newsletter, Sept. 2005 Harold Moritz collection 1991-2009
Spessartine
Formula: Mn2+3Al2(SiO4)3
Colour: maroon
Description: As a component in almandine, not verified as a separate species. XRF testing of 7 garnets found 23 to 47% Mn component of the total Fe-Mn content.
Reference: Field collected by Harold Moritz, confirmed by XRF.
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Reference: Daniel J. Kimball
Tapiolite-(Fe)
Formula: (Fe,Mn)(Ta,Nb)2O6
Habit: Complex, twinned short prisms or pyramidal tetragonal.
Colour: black
Description: Three specimens are known, with very similar with crystals about 3-4 cm, in quartz, albite and/or muscovite. Two are complexly crystallized apparently twinned, that somewhat resemble garnets, but of course black and submetallic. Other than one specimen from the Hale Quarry, this is the only known Connecticut location for this mineral.
Reference: Leif DiValentino collection, Harold Moritz collection
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Uraninite
Formula: UO2
Habit: octahedral
Colour: black
Description: Typically highly altered and surrounded by secondary U mineral haloes.
Reference: P Cristofono collection, 2007 Harold Moritz collection, 1991-2009
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Colour: yellow
Description: Usually replacing small uraninite crystals.
Reference: P Cristofono collection, 2007 Harold Moritz collection 1991-2009
'Yttrocolumbite-(Y)' ?
Formula: Y(U4+,Fe2+)Nb2O8
Description: Extremely rare mineral. No chemical data available.
Zircon
Formula: Zr(SiO4)
Habit: radiating aggregates
Colour: brown
Description: Usually small, inconspicuous brown radiating aggregates, often stained with limonite.
Reference: Field collected by Harold Moritz.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Löllingite2.EB.15aFeAs2
Group 4 - Oxides and Hydroxides
'Columbite-(Fe)'4.DB.35FeNb2O6
Goethite4.00.α-Fe3+O(OH)
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Ferruginous Quartz4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Tapiolite-(Fe)4.DB.10(Fe,Mn)(Ta,Nb)2O6
Uraninite4.DL.05UO2
Yttrocolumbite-(Y) ?4.DB.25Y(U4+,Fe2+)Nb2O8
Group 5 - Nitrates and Carbonates
'Bismutite'5.BE.25(BiO)2CO3
Group 8 - Phosphates, Arsenates and Vanadates
'Autunite'8.EB.05Ca(UO2)2(PO4)2 · 11H2O
Fluorapatite8.BN.05Ca5(PO4)3F
Meta-autunite8.EB.10Ca(UO2)2(PO4)2 · 6-8H2O
Metatorbernite8.EB.10Cu(UO2)2(PO4)2 · 8H2O
Monazite-(Ce)8.AD.50Ce(PO4)
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Almandine'9.AD.25Fe2+3Al2(SiO4)3
'Annite'9.EC.20KFe2+3(AlSi3O10)(OH)2
'Beryl'9.CJ.05Be3Al2(Si6O18)
Foitite ?9.CK.05(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Zircon9.AD.30Zr(SiO4)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Löllingite2.12.2.9FeAs2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
'Yttrocolumbite-(Y)' ?8.1.3.2Y(U4+,Fe2+)Nb2O8
AB2O6
Columbite-(Fe)8.3.2.2FeNb2O6
Tapiolite-(Fe)8.3.1.1(Fe,Mn)(Ta,Nb)2O6
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Autunite40.2a.1.1Ca(UO2)2(PO4)2 · 11H2O
Meta-autunite40.2a.1.2Ca(UO2)2(PO4)2 · 6-8H2O
Metatorbernite40.2a.13.2Cu(UO2)2(PO4)2 · 8H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Staurolite52.2.3.1Fe2+2Al9Si4O23(OH)
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
Uranophane53.3.1.2Ca(UO2)2(SiO3OH)2 · 5H2O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Foitite ?61.3.1.1(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Annite71.2.2b.3KFe2+3(AlSi3O10)(OH)2
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Opal
var: Opal-AN
-SiO2 · nH2O
Quartz
var: Ferruginous Quartz
-SiO2
var: Rose Quartz-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

HHydrogen
H AnniteKFe32+(AlSi3O10)(OH)2
H AutuniteCa(UO2)2(PO4)2 · 11H2O
H Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
H Goethiteα-Fe3+O(OH)
H Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
H MetatorberniteCu(UO2)2(PO4)2 · 8H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H OpalSiO2 · nH2O
H Opal (var: Opal-AN)SiO2 · nH2O
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H StauroliteFe22+Al9Si4O23(OH)
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C Bismutite(BiO)2CO3
OOxygen
O AlbiteNa(AlSi3O8)
O AlmandineFe32+Al2(SiO4)3
O AnniteKFe32+(AlSi3O10)(OH)2
O AutuniteCa(UO2)2(PO4)2 · 11H2O
O BerylBe3Al2(Si6O18)
O Bismutite(BiO)2CO3
O Columbite-(Fe)FeNb2O6
O Quartz (var: Ferruginous Quartz)SiO2
O FluorapatiteCa5(PO4)3F
O Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
O Goethiteα-Fe3+O(OH)
O Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
O MetatorberniteCu(UO2)2(PO4)2 · 8H2O
O MicroclineK(AlSi3O8)
O Monazite-(Ce)Ce(PO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O OpalSiO2 · nH2O
O Opal (var: Opal-AN)SiO2 · nH2O
O QuartzSiO2
O Quartz (var: Rose Quartz)SiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Quartz (var: Smoky Quartz)SiO2
O SpessartineMn32+Al2(SiO4)3
O StauroliteFe22+Al9Si4O23(OH)
O Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O UraniniteUO2
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
O ZirconZr(SiO4)
FFluorine
F FluorapatiteCa5(PO4)3F
NaSodium
Na AlbiteNa(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AlmandineFe32+Al2(SiO4)3
Al AnniteKFe32+(AlSi3O10)(OH)2
Al BerylBe3Al2(Si6O18)
Al Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SpessartineMn32+Al2(SiO4)3
Al StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si AlmandineFe32+Al2(SiO4)3
Si AnniteKFe32+(AlSi3O10)(OH)2
Si BerylBe3Al2(Si6O18)
Si Quartz (var: Ferruginous Quartz)SiO2
Si Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OpalSiO2 · nH2O
Si Opal (var: Opal-AN)SiO2 · nH2O
Si QuartzSiO2
Si Quartz (var: Rose Quartz)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Quartz (var: Smoky Quartz)SiO2
Si SpessartineMn32+Al2(SiO4)3
Si StauroliteFe22+Al9Si4O23(OH)
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si ZirconZr(SiO4)
PPhosphorus
P AutuniteCa(UO2)2(PO4)2 · 11H2O
P FluorapatiteCa5(PO4)3F
P Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
P MetatorberniteCu(UO2)2(PO4)2 · 8H2O
P Monazite-(Ce)Ce(PO4)
P TorberniteCu(UO2)2(PO4)2 · 12H2O
KPotassium
K AnniteKFe32+(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AutuniteCa(UO2)2(PO4)2 · 11H2O
Ca FluorapatiteCa5(PO4)3F
Ca Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe AlmandineFe32+Al2(SiO4)3
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe Columbite-(Fe)FeNb2O6
Fe Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Fe Goethiteα-Fe3+O(OH)
Fe LöllingiteFeAs2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe StauroliteFe22+Al9Si4O23(OH)
Fe Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
Fe Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
CuCopper
Cu MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
AsArsenic
As LöllingiteFeAs2
YYttrium
Y Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Columbite-(Fe)FeNb2O6
Nb Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
CeCerium
Ce Monazite-(Ce)Ce(PO4)
TaTantalum
Ta Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
BiBismuth
Bi Bismutite(BiO)2CO3
UUranium
U AutuniteCa(UO2)2(PO4)2 · 11H2O
U Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
U MetatorberniteCu(UO2)2(PO4)2 · 8H2O
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U UraniniteUO2
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Foye, Wilbur G., (1922), Mineral Localities in the Vicinity of Middletown, Connecticut. American Mineralogist: 7: 4-12.
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.
Schooner, Richard. (1961), The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut mineralogy.
LMSCC Newsletter (2005), (September).

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