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Old Mine Park (Lane’s Mine of Trumbull; Lane's New Stratford mine; Hubbard Mine; Long Hill Mine; Old Tungsten Mine), Long Hill, Trumbull, Fairfield Co., Connecticut, USAi
Regional Level Types
Old Mine Park (Lane’s Mine of Trumbull; Lane's New Stratford mine; Hubbard Mine; Long Hill Mine; Old Tungsten Mine)Park
Long HillHill
Trumbull- not defined -
Fairfield Co.County
ConnecticutState
USACountry

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Latitude & Longitude (WGS84): 41° 17' 21'' North , 73° 13' 37'' West
Latitude & Longitude (decimal): 41.28917,-73.22722
GeoHash:G#: dr7fvsmwf
Locality type:Park
Köppen climate type:Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Trumbull36,018 (2017)5.6km
Easton7,625 (2017)7.1km
Shelton41,296 (2017)11.6km
Derby12,700 (2017)12.1km
Bridgeport147,629 (2017)13.7km


This locality (a town park), like the neighboring Old Mine Plaza (now Home Depot), is unique in Connecticut for its varied mineralogy and the area was prospected since the early 19th century. The park encompasses a number of unrelated deposits with separate prospecting and mining history and mineralogy. The town of Trumbull took the property in lieu of back taxes on October 4, 1937 and named it Old Mine Park on January 4, 1940 (Sullivan, 1985). When opened, the town parks commissioner wrote that the “portion of it which was formerly worked and exposed during mining operations will be left open to residents and non-residents who are interested in Geology or Mineralogy for the study and removal of specimens” (Whitney, 1938). Collecting is no longer allowed, however.

The area is underlain by gently dipping, interlayered amphibolite and marble (metamorphosed during the Acadian Orogeny) with a zone of pegmatite below. The amphibolite, which surrounds the park area, hosts zones of alteration to a quartz, clinozoisite, actinolite, scheelite, marialite, albite and/or calcite rock (formed during an Alleghenian reheating event). Within the park only, some of the scheelite at the contact with the marble is pseudomorphed by ferberite (all crystals tested are Fe-dominant and use of the obsolete term "wolframite" should be abandoned here), and was the subject of short-lived mining efforts around 1900. According to Sullivan (1985), this was after Ephraim Lane and later his son Charles, prospected it in the early to mid-1800s, and after Thomas Hubbard had searched in vain for copper, lead and silver deposits, not tungsten, in the late 1880s.

Sullivan also states that it should be the first tungsten deposit identified in North America (it was the first mined) and the correct type locality for tungstite, rather than the typically referenced Ephraim Lane's Mine in Monroe: http://www.mindat.org/loc-14012.html. Hobbs (1901) states that "The confusion which has arisen has been due largely to the propinquity of the two localities and to the fact that both mines were owned by men bearing the same surname." These men were Ephraim and son Charles. No tungsten mineralization occurs at Lane's Mine in Monroe, the type tungstite occurs as an alteration of ferberite pseudomorphs and scheelite unique to the Trumbull mine (see specimens in Yale-Peabody Museum collection). Early reports by Silliman (1819a, 1819b, 1819c, 1821, 1822a, 1822b), Bowen (1822), and Hitchcock and Silliman (1826), which describe minerals initially attributed to Lane's Mine in Monroe, are actually describing minerals from the Trumbull deposit. This was eventually corrected by Hitchcock (1828) and is further discussed in Hitchcock (1835).

Mining of tungsten from the ferberite pseudomorphs after scheelite, and associated unaltered scheelite, from a quartz/clinozoisite-rich zone just below an amphibolite/marble contact was undertaken by the American Tungsten Mining and Milling Company starting in 1899. They mined for a short time and built a mill that used a dry process that produced a 5% yield, but by 1902 they shut down because this process could not separate pyrite from the tungsten minerals (without additional roasting). A proven wet process was suggested by Gurlt, but not undertaken. The mine was also poorly laid out. The buildings lay idle until 1916 when they were destroyed by a fire. Had they realized that scheelite is much more widespread in the amphibolite (than at the ferberite pseudomorph area), which is generally flat-lying and extends at least 1 km around their shaft (and well outside the park), a significant mine could have been developed. A SW UV light survey of the park and surrounding area for scheelite was conducted by Fisher (1942, see map in Kerr, 1946).

According to Sullivan (1985), this site is also the first known North American topaz locality. The topaz occurs in numerous cross-cutting, steeply-dipping, +/-1m thick, hydrothermal veins that crop out in the park and surrounding area and also associated with the Alleghenian reheating event. Their mineralogy varies but all show a similar metasomatic alteration of the host amphibolite to fine-grained, brownish phlogopite/marialite with pyrite/pyrrhotite, minor ilmenite, fluorapatite, and tiny scheelite grains. The last two minerals are really only obvious under SW UV light. The most common contain a core assemblage of coarse-grained quartz+/-topaz+/-fluorite var. chlorophane with a fine to medium-grained, sub-parallel muscovite (variety margarodite) wall zone. In some veins, the topaz, which may commonly have a coarse muscovite coating, has altered to a very soft, compact and granular to peripherally parallel-fibrous or lamellar habit of margarite (confirmed in 2014 using Raman spectroscopy). A predominantly quartz cored vein, called the Champion Lode, was mined for quartz for use in wood processing (Hobbs 1901, Trumbull Historical Society 1966). Some veins contain mostly albite+/-clinochlore+/-marialite. Very rare are calcite-cored veins with beryl and albite along the contact. Outcrops of the veins are generally small and the veins may in fact grade in composition between these extremes both laterally and vertically as some off-site veins show a mix of these compositions.

Later, early Mesozoic brittle faulting and associated hydrothermal activity deposited purple to green fluorite, pyrite, pyrrhotite, tabular calcite in veins and fractures in a manner similar to that seen at the Thomaston Dam railroad cut.

Other minerals are found in the marble (amphiboles, pyroxenes, titanite, grossular, phlogopite), in small Alpine-clefts, and in the pegmatites (albite, microcline, quartz, muscovite, rarely schorl).

Sullivan reports various mineral misidentification through the years, such as topaz being called beryl (though it is present along the contact of rare calcite-rich veins), Hoadley's (1918) unconfirmed report of cronstedtite, zoisite (epidote, though the 'epidote' associated with the scheelite/ferberite is clinozoisite), and diaspore "mistakenly identified as euclase".

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


60 valid minerals. 7 erroneous literature entries.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
Formula: Na(AlSi3O8)
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Almandine ?
Formula: Fe2+3Al2(SiO4)3
Analcime
Formula: Na(AlSi2O6) · H2O
Andradite
Formula: Ca3Fe3+2(SiO4)3
Aragonite
Formula: CaCO3
Arsenopyrite
Formula: FeAsS
Augite ?
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Baryte
Formula: BaSO4
Beryl
Formula: Be3Al2(Si6O18)
'Biotite'
Bismuth
Formula: Bi
Bornite
Formula: Cu5FeS4
Brookite
Formula: TiO2
Calcite
Formula: CaCO3
Chalcopyrite
Formula: CuFeS2
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Copper
Formula: Cu
Cronstedtite ?
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Diaspore
Formula: AlO(OH)
Diopside
Formula: CaMgSi2O6
Enstatite
Formula: MgSiO3
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Euclase
Formula: BeAl(SiO4)(OH)
Ferberite
Formula: FeWO4
Ferricopiapite ?
Formula: Fe5(SO4)6O(OH) · 20H2O
Fluorapatite
Formula: Ca5(PO4)3F
Fluorite
Formula: CaF2
Fluorite var: Chlorophane
Formula: CaF2
Galena
Formula: PbS
Galena var: Argentiferous Galena
Formula: PbS
Goethite
Formula: α-Fe3+O(OH)
Gold ?
Formula: Au
Graphite
Formula: C
Grossular
Formula: Ca3Al2(SiO4)3
Gypsum
Formula: CaSO4 · 2H2O
Hematite
Formula: Fe2O3
Ilmenite
Formula: Fe2+TiO3
Jarosite ?
Formula: KFe3+ 3(SO4)2(OH)6
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnesio-hornblende
Formula: ☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Malachite
Formula: Cu2(CO3)(OH)2
Marcasite
Formula: FeS2
Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
Marialite
Formula: Na4Al3Si9O24Cl
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Microcline
Formula: K(AlSi3O8)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Opal
Formula: SiO2 · nH2O
Opal var: Opal-AN
Formula: SiO2 · nH2O
Pargasite ?
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
Pyrite
Formula: FeS2
Pyrolusite
Formula: Mn4+O2
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Rutile
Formula: TiO2
'Scapolite'
Scheelite
Formula: Ca(WO4)
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Siderite
Formula: FeCO3
Silver
Formula: Ag
Sphalerite
Formula: ZnS
Szomolnokite ?
Formula: FeSO4 · H2O
Talc
Formula: Mg3Si4O10(OH)2
Titanite
Formula: CaTi(SiO4)O
Topaz
Formula: Al2(SiO4)(F,OH)2
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Tungstenite
Formula: WS2
Tungstite
Formula: WO3 · H2O
Uraninite
Formula: UO2
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Copper1.AA.05Cu
Gold ?1.AA.05Au
Graphite1.CB.05aC
Silver ?1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
var: Argentiferous Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Tungstenite ?2.EA.30WS2
Group 3 - Halides
Fluorite3.AB.25CaF2
var: Chlorophane3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Brookite4.DD.10TiO2
Diaspore4.FD.10AlO(OH)
Ferberite4.DB.30FeWO4
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Pyrolusite ?4.DB.05Mn4+O2
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Tungstite4.FJ.10WO3 · H2O
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Ferricopiapite ?7.DB.35Fe5(SO4)6O(OH) · 20H2O
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite ?7.BC.10KFe3+ 3(SO4)2(OH)6
Melanterite7.CB.35Fe2+(H2O)6SO4 · H2O
Pickeringite7.CB.85MgAl2(SO4)4 · 22H2O
Scheelite7.GA.05Ca(WO4)
Szomolnokite ?7.CB.05FeSO4 · H2O
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Almandine ?9.AD.25Fe2+3Al2(SiO4)3
Analcime ?9.GB.05Na(AlSi2O6) · H2O
Andradite ?9.AD.25Ca3Fe3+2(SiO4)3
Augite ?9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Beryl9.CJ.05Be3Al2(Si6O18)
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Cronstedtite ?9.ED.15Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Diopside9.DA.15CaMgSi2O6
Enstatite9.DA.05MgSiO3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Euclase ?9.AE.10BeAl(SiO4)(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
Magnesio-hornblende9.DE.10☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Margarite9.EC.30CaAl2(Al2Si2O10)(OH)2
Marialite9.FB.15Na4Al3Si9O24Cl
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Pargasite ?9.DE.15{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Topaz9.AF.35Al2(SiO4)(F,OH)2
Zoisite ?9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Limonite'-(Fe,O,OH,H2O)
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold ?1.1.1.1Au
Silver ?1.1.1.2Ag
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Tungstenite ?2.12.10.3WS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Brookite4.4.5.1TiO2
Pyrolusite ?4.4.1.4Mn4+O2
Rutile4.4.1.1TiO2
AX3
Tungstite4.5.2.1WO3 · H2O
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Diaspore6.1.1.1AlO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Melanterite29.6.10.1Fe2+(H2O)6SO4 · H2O
Szomolnokite ?29.6.2.2FeSO4 · H2O
AB2(XO4)4·H2O
Pickeringite29.7.3.1MgAl2(SO4)4 · 22H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite ?30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Ferricopiapite ?31.10.5.4Fe5(SO4)6O(OH) · 20H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Ferberite48.1.1.2FeWO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine ?51.4.3a.2Fe2+3Al2(SiO4)3
Andradite ?51.4.3b.1Ca3Fe3+2(SiO4)3
Grossular51.4.3b.2Ca3Al2(SiO4)3
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
Euclase ?52.2.1.1BeAl(SiO4)(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Clinozoisite58.2.1a.4{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Zoisite ?58.2.1b.1{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
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
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite ?65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Enstatite65.1.2.1MgSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Pargasite ?66.1.3a.12{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Cronstedtite ?71.1.4.7Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Margarite71.2.2c.1CaAl2(Al2Si2O10)(OH)2
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
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)
Al-Si Framework with other Be/Al/Si frameworks
Marialite76.3.1.1Na4Al3Si9O24Cl
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime ?77.1.1.1Na(AlSi2O6) · H2O
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
var: Oligoclase
-(Na,Ca)[Al(Si,Al)Si2O8]
Aragonite-CaCO3
'Biotite'-
Fluorite
var: Chlorophane
-CaF2
Galena
var: Argentiferous Galena
-PbS
'Limonite'-(Fe,O,OH,H2O)
Magnesio-hornblende-☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Opal
var: Opal-AN
-SiO2 · nH2O
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H MargariteCaAl2(Al2Si2O10)(OH)2
H TopazAl2(SiO4)(F,OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H DiasporeAlO(OH)
H Opal (var: Opal-AN)SiO2 · nH2O
H TalcMg3Si4O10(OH)2
H OpalSiO2 · nH2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Limonite(Fe,O,OH,H2O)
H MalachiteCu2(CO3)(OH)2
H MelanteriteFe2+(H2O)6SO4 · H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H PickeringiteMgAl2(SO4)4 · 22H2O
H TungstiteWO3 · H2O
H GypsumCaSO4 · 2H2O
H Goethiteα-Fe3+O(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
H Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
H FerricopiapiteFe5(SO4)6O(OH) · 20H2O
H JarositeKFe3+ 3(SO4)2(OH)6
H SzomolnokiteFeSO4 · H2O
H AnalcimeNa(AlSi2O6) · H2O
H EuclaseBeAl(SiO4)(OH)
H Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be EuclaseBeAl(SiO4)(OH)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C SideriteFeCO3
C GraphiteC
C MalachiteCu2(CO3)(OH)2
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O FerberiteFeWO4
O AlbiteNa(AlSi3O8)
O MargariteCaAl2(Al2Si2O10)(OH)2
O ScheeliteCa(WO4)
O TopazAl2(SiO4)(F,OH)2
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
O ClinochloreMg5Al(AlSi3O10)(OH)8
O GrossularCa3Al2(SiO4)3
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O BaryteBaSO4
O BerylBe3Al2(Si6O18)
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O DiasporeAlO(OH)
O HematiteFe2O3
O Opal (var: Opal-AN)SiO2 · nH2O
O SideriteFeCO3
O TalcMg3Si4O10(OH)2
O TitaniteCaTi(SiO4)O
O UraniniteUO2
O BrookiteTiO2
O MarialiteNa4Al3Si9O24Cl
O OpalSiO2 · nH2O
O DiopsideCaMgSi2O6
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O EnstatiteMgSiO3
O Limonite(Fe,O,OH,H2O)
O MalachiteCu2(CO3)(OH)2
O MelanteriteFe2+(H2O)6SO4 · H2O
O MuscoviteKAl2(AlSi3O10)(OH)2
O PickeringiteMgAl2(SO4)4 · 22H2O
O QuartzSiO2
O RutileTiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O TungstiteWO3 · H2O
O GypsumCaSO4 · 2H2O
O AragoniteCaCO3
O Goethiteα-Fe3+O(OH)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O CalciteCaCO3
O FluorapatiteCa5(PO4)3F
O Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
O IlmeniteFe2+TiO3
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O PhlogopiteKMg3(AlSi3O10)(OH)2
O MicroclineK(AlSi3O8)
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
O AlmandineFe32+Al2(SiO4)3
O Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
O FerricopiapiteFe5(SO4)6O(OH) · 20H2O
O JarositeKFe3+ 3(SO4)2(OH)6
O SzomolnokiteFeSO4 · H2O
O AnalcimeNa(AlSi2O6) · H2O
O EuclaseBeAl(SiO4)(OH)
O PyrolusiteMn4+O2
O Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O AndraditeCa3Fe23+(SiO4)3
FFluorine
F Fluorite (var: Chlorophane)CaF2
F TopazAl2(SiO4)(F,OH)2
F FluoriteCaF2
F FluorapatiteCa5(PO4)3F
NaSodium
Na AlbiteNa(AlSi3O8)
Na MarialiteNa4Al3Si9O24Cl
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Na Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Na AnalcimeNa(AlSi2O6) · H2O
MgMagnesium
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg TalcMg3Si4O10(OH)2
Mg DiopsideCaMgSi2O6
Mg EnstatiteMgSiO3
Mg PickeringiteMgAl2(SO4)4 · 22H2O
Mg Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al MargariteCaAl2(Al2Si2O10)(OH)2
Al TopazAl2(SiO4)(F,OH)2
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al GrossularCa3Al2(SiO4)3
Al BerylBe3Al2(Si6O18)
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al DiasporeAlO(OH)
Al MarialiteNa4Al3Si9O24Cl
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al PickeringiteMgAl2(SO4)4 · 22H2O
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
Al AlmandineFe32+Al2(SiO4)3
Al Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Al AnalcimeNa(AlSi2O6) · H2O
Al EuclaseBeAl(SiO4)(OH)
Al Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si MargariteCaAl2(Al2Si2O10)(OH)2
Si TopazAl2(SiO4)(F,OH)2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si GrossularCa3Al2(SiO4)3
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si BerylBe3Al2(Si6O18)
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si Opal (var: Opal-AN)SiO2 · nH2O
Si TalcMg3Si4O10(OH)2
Si TitaniteCaTi(SiO4)O
Si MarialiteNa4Al3Si9O24Cl
Si OpalSiO2 · nH2O
Si DiopsideCaMgSi2O6
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si EnstatiteMgSiO3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Si AlmandineFe32+Al2(SiO4)3
Si Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Si AnalcimeNa(AlSi2O6) · H2O
Si EuclaseBeAl(SiO4)(OH)
Si Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si AndraditeCa3Fe23+(SiO4)3
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S BaryteBaSO4
S GalenaPbS
S Galena (var: Argentiferous Galena)PbS
S PyriteFeS2
S ArsenopyriteFeAsS
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S MelanteriteFe2+(H2O)6SO4 · H2O
S PickeringiteMgAl2(SO4)4 · 22H2O
S PyrrhotiteFe7S8
S SphaleriteZnS
S MarcasiteFeS2
S GypsumCaSO4 · 2H2O
S FerricopiapiteFe5(SO4)6O(OH) · 20H2O
S JarositeKFe3+ 3(SO4)2(OH)6
S SzomolnokiteFeSO4 · H2O
S TungsteniteWS2
ClChlorine
Cl MarialiteNa4Al3Si9O24Cl
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca Fluorite (var: Chlorophane)CaF2
Ca MargariteCaAl2(Al2Si2O10)(OH)2
Ca ScheeliteCa(WO4)
Ca GrossularCa3Al2(SiO4)3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca FluoriteCaF2
Ca TitaniteCaTi(SiO4)O
Ca DiopsideCaMgSi2O6
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca GypsumCaSO4 · 2H2O
Ca AragoniteCaCO3
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
Ca Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Ca Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca AndraditeCa3Fe23+(SiO4)3
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti BrookiteTiO2
Ti RutileTiO2
Ti IlmeniteFe2+TiO3
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
Mn PyrolusiteMn4+O2
FeIron
Fe FerberiteFeWO4
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe HematiteFe2O3
Fe PyriteFeS2
Fe SideriteFeCO3
Fe ArsenopyriteFeAsS
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Limonite(Fe,O,OH,H2O)
Fe MelanteriteFe2+(H2O)6SO4 · H2O
Fe PyrrhotiteFe7S8
Fe MarcasiteFeS2
Fe Goethiteα-Fe3+O(OH)
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe IlmeniteFe2+TiO3
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Fe AlmandineFe32+Al2(SiO4)3
Fe FerricopiapiteFe5(SO4)6O(OH) · 20H2O
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe SzomolnokiteFeSO4 · H2O
Fe AndraditeCa3Fe23+(SiO4)3
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu CopperCu
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
AgSilver
Ag SilverAg
BaBarium
Ba BaryteBaSO4
WTungsten
W FerberiteFeWO4
W ScheeliteCa(WO4)
W Wolframite(Fe2+)WO4 to (Mn2+)WO4
W TungstiteWO3 · H2O
W TungsteniteWS2
AuGold
Au GoldAu
PbLead
Pb GalenaPbS
Pb Galena (var: Argentiferous Galena)PbS
BiBismuth
Bi BismuthBi
UUranium
U UraniniteUO2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Silurian
419.2 - 443.8 Ma



ID: 2865451
Basal member [of The Straits Schist]

Age: Silurian (419.2 - 443.8 Ma)

Stratigraphic Name: The Straits Schist

Description: ( = Russell Mountain Formation of Massachusetts) - Distinguished by presence of layers of amphibolite, marble, calc-silicate rock, and quartzite within more uniform schist like that on either side. Minor, unevenly distributed mineralization in W, Bi, Cu, Ni, and other metals.

Comments: Part of Central Lowlands; Iapetus (Oceanic) Terrane - Connecticut Valley Synclinorium; Hartland Belt Original map source: Connecticut Geological and Natural History Survey, DEP, in cooperation with the U.S. Geological Survey, 2000, Bedrock Geology of Connecticut, shapefile, scale 1:50,000

Lithology: Major:{schist,amphibolite,marble}, Minor:{calc silicate rock,quartzite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Ordovician - Neoproterozoic
443.8 - 1000 Ma



ID: 3190671
Precambrian-Phanerozoic sedimentary rocks

Age: Neoproterozoic to Ordovician (443.8 - 1000 Ma)

Lithology: Mudstone-carbonate-sandstone-conglomerate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Silliman, Benjamin. (1819a): Discovery of American tungsten and tellurium. American Journal of Science: series 1: 1: 312.
Silliman, Benjamin. (1819b): Additional note concerning the tungsten and tellurium. American Journal of Science: series 1: 1: 316.
Silliman, Benjamin. (1819c): Additional notice of the tungsten and tellurium. American Journal of Science: series 1: 1: 405-10.
Silliman, Benjamin. (1821): Notice of an argentiferous galena from Huntington and another lead ore from Bethlehem. American Journal of Science: series 1: 3: 173-76.
Bowen, George T. (1822): Analysis of the calcareous oxide of tungsten from Huntington. American Journal of Science: series 1: 5: 118-21.
Silliman, Benjamin. (1822a): Native yellow oxide of tungsten. American Journal of Science: series 1: 4: 52.
Silliman, Benjamin. (1822b): Massive yellow oxide of tungsten. American Journal of Science: series 1: 4: 187-88.
Robinson, Samuel. (1825): A Catalogue of American Minerals, With Their Localities; Including All Which Are Known to Exist in the United States and British Provinces, And Having the Towns, Counties, and Districts in Each State and Province Arranged Alphabetically. With an Appendix, Containing Additional Localities and a Tabular View. Cummings, Hilliard, & Co., Boston.
Hitchcock, Edward and Benjamin Silliman. (1826): Topaz. American Journal of Science: series 1: 10: 352-358.
Hitchcock, Edward. (1828): Miscellaneous notice of mineral localities. American Journal of Science: series 1: 14: 215-30.
Shepard, Charles U. (1835). Treatise on Mineralogy: Second Part: 2: 237.
Shepard, Charles U. (1837): A Report on the Geological Survey of Connecticut.
Shepard, Charles U. (1842): On Washingtonite (a New Mineral), the Discovery of Euclase in Connecticut, and Additional Notices of the Supposed Phenakite of Goshen [MA], and Calstron-baryte of Schoharie, N. Y. American Journal of Science: 43: 364.
Dana, James D. (1851): Mineralogical Notices: Diaspore. American Journal of Science: s. 2: 12: 215.
Shepard, Charles U. (1851): Title unknown. Proceedings of the 4th Meeting, American Association for the Advancement of Science: 319.
Gurlt, Adolf. (1894): On a remarkable deposit of wolfram-ore in the United States. Transactions of the American Institute of Mining Engineers: 22: 236-242.
Hobbs, W. H. (1901): The old tungsten mine in Trumbull, Conn. U.S Geological Survey Annual Report 22: 7-22.
Warren, C. H. (1901): Mineralogical notes. American Journal of Science: 4th series: 11: 373.
Hoadley, Charles W. (1918): An American Occurrence of Cronstedtite. American Mineralogist: 3: 6.
Shannon, Earl V. (1921a): The Old Tungsten Mine in Trumbull, Connecticut. American Mineralogist: 6: 126-128.
Shannon, Earl V. (1921b), Some Minerals from the Old Tungsten Mine at Long Hill in Trumbull, Connecticut. Proceedings U.S. National Museum: 58(2348): 469-482.
Manchester, James G. (1931): The Minerals of New York City and Its Environs. Afferton Press.
Schairer, John. (1931): Minerals of Connecticut. Connecticut Geological and Natural History Survey Bulletin 51.
Blatz, Paul T. (1938): The Old Tungsten Mine in Trumbull, Connecticut. Rocks & Minerals: 13(8): 236-237.
Whitney, Harold F. (1938), Trumbull Park Notice: Rocks and Minerals: 13(8): 237.
Fisher, Joseph O. (1942), Structure and origin of the old tungsten mine near Trumbull, Conn.: Unpublished MA thesis, Columbia U.
Kerr, Paul F. (1946), Tungsten Mineralization in the United States: Geological Society of America Memoir 15.
Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.
Trumbull Historical Society. (1966): History and Minerals of Old Mine Park.
Shelton, William. (1967), Notes on Trumbull, Connecticut. Rocks and Minerals: 42(10): 768-9.
Ryerson, Kathleen. (1972): Rock Hound's Guide to Connecticut. Pequot Press.
Januzzi, Ronald E. (1976): Mineral Localities of CT and Southeastern NY State. The Mineralogical Press, Danbury, Connecticut.
Webster, Bud. (1978): Mineral Collector's Field Guide Connecticut. Privately published.
Webster, Bud and Bill Shelton. (1979): Mineral Collector's Field Guide The Northeast. Mineralogy, Wallingford, Conn.
Sullivan, Earle C. (1985): History and Minerals of Old Mine Park. Second Edition, Revised and Expanded. Trumbull Historical Society, Inc.
Januzzi, Ronald E. (1994): Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut.
Weber, Marcelle H. and Earle C. Sullivan. (1995) Connecticut Mineral Locality Index, Rocks & Minerals (Connecticut Issue): 70(6).

External Links

http://diva.library.cmu.edu/ajs/search.jsp - 19th century American Journal of Science search page:
http://www.mindat.org/photo-443497.html - Topaz crystal illustrations in: Shepard, Charles U. (1835). Treatise on Mineralogy, Second Part, vol. 2, p. 237.
http://www.mindat.org/photo-443142.html - Topaz crystal illustration by James D. Dana in American Journal of Science 18:419-420, November, 1854.


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