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Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield Co., Connecticut, USAi
Regional Level Types
Old Mine Plaza construction siteConstruction Site
Long HillHill
Trumbull- not defined -
Fairfield Co.County
ConnecticutState
USACountry

This page kindly sponsored by David L. Busha
Key
Lock Map
Latitude & Longitude (WGS84): 41° 17' 27'' North , 73° 13' 50'' West
Latitude & Longitude (decimal): 41.29111,-73.23083
GeoHash:G#: dr7fvsffj
Locality type:Construction Site
Köppen climate type:Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Trumbull36,018 (2017)5.9km
Easton7,625 (2017)7.0km
Shelton41,296 (2017)11.8km
Derby12,700 (2017)12.3km
Bridgeport147,629 (2017)14.0km


A well-known construction site locality bordering the NW side of Old Mine Park (Hubbard) Tungsten Mine, both sites have a mineral assemblage unique to the state. The original development as a retail plaza was abandoned and in late 2009 construction began on a Home Depot store that was completed in January 2011.

This locality, like the neighboring Old Mine Park, is underlain by gently dipping amphibolite and marble. The amphibolite (containing magnesio-hornblende) includes layers and boudins of green albite variety oligoclase and quartz and very coarse-grained fan-shaped aggregates of pale greenish-white marialite with sulfides. Excellent specimens of fluorescent scheelite are found in the amphibolite cut along the east edge of the property, especially where it is altered to a pale gray-brown clinozoisite. The marble contains grossular and diopside.

Cross-cutting veins contain the same muscovite-topaz-fluorite var. chlorophane-quartz assemblage found in the surrounding area. Excellent pale to emerald-green beryl crystals are found at the contact of cross-cutting calcite-marialite-clinochlore-fluorite-sulfide veins with the amphibolite, which is metasomatically altered to marialite-phlogopite along the contact. Heitner (1998) indicates the material recovered was beryl, with no mention of emerald. The occurrence of emerald from this locality remains controversial. Analyses of some of the lighter colored crystals show traces of Cr and Fe with typically more Fe, but not many darker colored crystals have been tested.

Light green beryl was also found in small granite pegmatite stringers less than 7 cm wide.

There are many small brittle faults cross-cutting the host rocks and open cavities in the faults contain excellent poker-chip calcite, purple to green fluorite, sulfides, and quartz. One extremely rusty fault breccia with abundant pyrite was exposed near the center of the site.

One word of caution, much rock fill was brought in to grade the site over the years and some collectors unfortunately have contaminated the site with discarded material from other localities. Only minerals found in the host matrix rocks/fault zones should be listed.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


77 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Jeremy Zolan (visual ID)
Albite
Formula: Na(AlSi3O8)
Habit: Tapered with large rhombic 010 face.
Colour: white, pale to medium green to gray-green
Description: Mostly as rock forming massive material, though some quite coarse-grained. Rare striated micro-crystals, some in parallel growth, to several cm lining open fissures with gypsum, fluorite, clinochlore.
Reference: J. Zolan Collection; Harold Moritz collection.
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Habit: Tapered with large rhombic 010 face.
Colour: white, pale to medium green to gray-green
Description: Mostly as white to green rock forming massive material, though some quite coarse-grained. Rare striated micro-crystals, some in parallel growth, to several cm lining open fissures with gypsum, fluorite, clinochlore.
Reference: Harold Moritz collection
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: J. Zolan Collec.
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Habit: anhedral flakes
Colour: black
Description: Occurs as a rind along the boundary of bodies of massive, albite-rich bodies formed as an alteration of the hosting amphibolite.
Reference: Harold Moritz collection
Aragonite
Formula: CaCO3
Reference: David Busha collection
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: David Busha collection
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Reference: Identified on site
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: J. Zolan Collec.
Bavenite
Formula: Ca4Be2Al2Si9O26(OH)2
Habit: fine needles
Colour: white
Description: Micro crystals lining fractures with fluorite, albite, clinchlore, gypsum.
Reference: Dr. Wilfred Talbot collection.
Beryl
Formula: Be3Al2(Si6O18)
Colour: light green (emerald)
Description: Small, but very clear light green beryl found in limestone (calcite) pods in black schist. Color possibly caused by iron(?) impurities. Dissolve the crystals out of the matrix with dilute HCl.
Reference: J. Zolan Collec.
Beryl var: Emerald ?
Formula: Be3Al2(Si6O18)
Description: Claims have been made that this locality has had an analysis showing a chromium value, but no published analyses. Crystals are really very pale and the term "emerald" is probably exaggerated.
Bismuth
Formula: Bi
Reference: Personally collected by David Busha 6/95
Bismuthinite
Formula: Bi2S3
Reference: Personally collected by David Busha 8/19/95
Bismutite
Formula: (BiO)2CO3
Reference: David Busha collection
Bornite ?
Formula: Cu5FeS4
Reference: J. Zolan Collec.
Calcite
Formula: CaCO3
Habit: hexagonal prisms, trigonal tabular overgrown around a tiny central rhomb, scalenohedral
Colour: white to creamy
Fluorescence: orange-red, pink
Description: Many occurrences - as massive vein filling with green fluorite, clinchlore, gypsum, sulfides, beryl, phlogopite; as discrete crystals (red-orange-fluorescing) that look like little trigonal discs piled in fractures in amphibolite with pyrite and purple fluorite; as dogteeth filling little pockets in brecciated marble - these are creamy colored and fluoresce pink.
Reference: J. Zolan Collection; Harold Moritz collection
Chalcopyrite
Formula: CuFeS2
Reference: J. Zolan Collec.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Habit: hemispherical aggregates of tabular crystals
Colour: dark green to black
Reference: P Cristofono collection, 2008
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Habit: elongated prismatic
Colour: clove brown
Description: Typically part of the altered amphibolite assemblage hosting scheelite - with quartz, calcite, marialite, actinolite.
Reference: Harold Moritz collection
Cobaltite
Formula: CoAsS
Habit: grains
Description: Silvery grains in cross-cutting calcite veins.
Reference: Dave Busha collection
Cuprite
Formula: Cu2O
Reference: J. Zolan Collec.
Devilline
Formula: CaCu4(SO4)2(OH)6 · 3H2O
Reference: David Busha collection SEM_EDS by Kaygeedee Minerals
Diopside
Formula: CaMgSi2O6
Reference: Identified on-site
Dolomite
Formula: CaMg(CO3)2
Reference: David Busha collection
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: J. Zolan Collec.
Epsomite ?
Formula: MgSO4 · 7H2O
Reference: Jeremy Zolan; David Busha collection
Erythrite
Formula: Co3(AsO4)2 · 8H2O
Habit: secondary encrustation
Colour: lavender
Description: Secondary crust on cobaltite grains in cross-cutting calcite veins.
Reference: Dave Busha collection
Ferberite
Formula: FeWO4
Habit: Tabular micro-crystals
Colour: metallic black
Description: Not as pseudomorphs after scheelite, but as original tabular micro-crystals. Confirmed ferberite pseudomorphs after scheelite are restricted to the adjacent Old Mine Park locality.
Reference: Dave Busha collection.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: David Busha collection
Fluorite
Formula: CaF2
Habit: octahedral
Colour: colorless, pale to emerald green, purple
Fluorescence: purple
Description: Excellent octahedral crystals transparent to translucent, in faults and veins, usually in groups, associated with calcite. Crystals can reach 3.5 cm on an edge.
Reference: Numerous private collections
Fluorite var: Chlorophane
Formula: CaF2
Reference: Kevin Czaja Collection
Galena
Formula: PbS
Reference: David Busha collection
Goethite
Formula: α-Fe3+O(OH)
Habit: botryoidal
Colour: brown
Description: Botryoidal masses in open spaces of fluorite-calcite-albite-clinochlore-gypsum veins, apparently due to altered iron sulfides.
Reference: Harold Moritz collection
Grossular
Formula: Ca3Al2(SiO4)3
Habit: dodecahedral
Colour: cinnamon to clove-brown
Description: Accessory in calc-silicate layers in the marble. Well-formed, gemmy crystals to 1.5 cm or so.
Reference: P. Cristofono collection; Dave Bodnar collection.
Gypsum
Formula: CaSO4 · 2H2O
Habit: cleavable masses
Colour: colorless
Description: Rarely found in open fissures as etched, transparent cleavable masses associated with fluorite.
Reference: J. Zolan collection. Harold Moritz collection.
Hedenbergite ?
Formula: CaFe2+Si2O6
Habit: radiating clusters
Colour: Greenish- Black
Reference: J. Zolan Collec.
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: 'Heulandite' should be changed to Heulandite- Ca. Inferred from the amount of marble at the site and also there is Stilbite-Ca. David Busha collection
'Heulandite subgroup'
Reference: David Busha collection
Hübnerite ?
Formula: MnWO4
Description: Only confirmed ferberite pseudomorphs after scheelite have ever been found in the area, and only within the adjacent Old Mine Park. Analyses are needed to substantiate this mineral.
Reference: J. Zolan Collec.
Hydrotungstite
Formula: WO3 · 2H2O
Description: Dehydrates to tungstite, whose presence outside of neighboring Old Mine Park has not been validated.
Reference: Jeremy Zolan
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Reference: David Busha collection
Ilmenite
Formula: Fe2+TiO3
Reference: David Busha collection
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: David Busha collection
'K Feldspar'
Reference: Harold Moritz collection
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Colour: colorless, white
Description: Micro crystals lining small cavities in muscovite-rich topaz vein wall zone with quartz and fluorite.
Reference: Harold Moritz collection
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Habit: prismatic
Colour: white
Description: Small prisms with stilbite in fractures.
Reference: Dave Busha collection
Lepidocrocite ?
Formula: γ-Fe3+O(OH)
Reference: J. Zolan Collec.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: J. Zolan Collec.
Linnaeite
Formula: Co2+Co3+2S4
Reference: David Busha collection
Magnesio-hornblende
Formula: ☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Habit: bladed
Colour: very dark green to black
Description: The major mineral found in the amphibolite bedrock hosting the scheelite.
Reference: Harold Moritz collection
Magnetite
Formula: Fe2+Fe3+2O4
Reference: J. Zolan Collec.
Malachite
Formula: Cu2(CO3)(OH)2
Habit: powdery
Colour: green
Description: An occasional micromount-sized piece may be found.
Reference: J. Zolan Collec.
'Manganese Oxides'
Reference: David S. Bernstein- Feb. 2010
Marcasite
Formula: FeS2
Reference: J. Zolan Collec.
Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
Habit: micaeous to fibrous, compact
Colour: white, pale gray
Description: Soft but brittle, parallel fibrous zones within quartz-topaz-fluorite-muscovite veins, grades to micaceous to compact granular. Confirmed by Raman spectroscopy (2014) from identical veins as the neighboring Old Mine Park site.
Reference: Jeremy Zolan
'Margarodite'
Description: variety of muscovite found along the contact of cross-cutting quartz-topaz-fluorite-muscovite veins with the host amphibolite.
Reference: Jeremy Zolan collection
Marialite
Formula: Na4Al3Si9O24Cl
Habit: radiating acicular
Colour: white, pale to dark green
Fluorescence: pink to lavender
Description: As large radiating acicular masses in the amphibolite associated with microcline, oligoclase, quartz, sulfides and clinochlore. Also along contact zones of the amphibolite with the cross-cutting quartz-topaz-fluorite-muscovite veins associated with phlogopite and beryl.
Reference: Harold Moritz collection
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Reference: Jeremy Zolan
Microcline
Formula: K(AlSi3O8)
Reference: Jeremy Zolan
Milarite
Formula: K2Ca4Al2Be4Si24O60 · H2O
Reference: Nathan Martin, pers. comm. 2011; http://www.mindat.org/mesg-7-237841.html
Molybdenite
Formula: MoS2
Habit: subhedral hexagonal plates
Description: Subhedral 2 cm crystal in quartz hosted by amphibolite.
Reference: Dave Busha collection
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: subhedral tabular
Colour: silvery
Description: Mainly as subparallel crystals in a nearly pure zone along the contact of quartz-topaz-fluorite-muscovite veins with the host amphibolite. Fine to coarse-grained. Not to be confused with the fibrous margarite bands found in contact with the muscovite.
Reference: J. Zolan Collec.
Opal
Formula: SiO2 · nH2O
Description: Hyalite variety. Fluoresces green.
Reference: field trip report, Garnet Gazette, December 2004, p 3.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Description: Hyalite variety. Fluoresces green.
Reference: field trip report, Garnet Gazette, December 2004, p 3.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Habit: subhedral tabular, granular
Colour: dark brown
Description: Found along the contact of cross-cutting hydrothermal calcite veins with the host amphibolite, crystals to 0.5 cm in the calcite, grading to fine-grained in the metasomatized adjacent amphibolite. Associated with scapolite, quartz, clinochlore, sulfides, rarely beryl, fluorite. Rare nice euhedral crystals to 1.5 cm.
Reference: Harold Moritz collection
Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
Reference: J. Zolan Collec.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: David Busha collection
Pyrite
Formula: FeS2
Reference: J. Zolan Collec.
Pyrolusite
Formula: Mn4+O2
Description: Visual identification of an unknown mineral. Extremely unlikely.
Pyrrhotite
Formula: Fe7S8
Habit: massive
Colour: reddish bronze
Description: An accessory in the calcite veins and amphibolite.
Reference: P Cristofono collection, 2008
Quartz
Formula: SiO2
Reference: J. Zolan Collec.
Quartz var: Rutilated Quartz
Formula: SiO2
Reference: David Busha collection
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Reference: David Busha collection
Rozenite
Formula: FeSO4 · 4H2O
Reference: Jeremy Zolan
Rutile
Formula: TiO2
Reference: David Busha collection
'Scapolite'
Habit: radiating acicular
Colour: white, pale to dark green
Description: A large amount of material was found by Mike Otto in 2010. It was originally thought to be Tremolite but testing of a piece of material collected by David Bernstein ( Testing- Bart Cannon) revealed it to be Scapolite
Reference: J. Zolan Collec.
Scheelite
Formula: Ca(WO4)
Colour: White to Honey Yellow
Fluorescence: Light Blue
Description: Excellent crystals of this scheelite are well-known among New England collectors. Primary Tungsten-bearing mineral from the locality. Occasionally, one may find a Wolframite after Scheelite crystal.
Reference: J. Zolan Collec.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: J. Zolan Collec.
Siderite
Formula: FeCO3
Reference: J. Zolan Collec.
Smithsonite
Formula: ZnCO3
Reference: David Busha collection
Sphalerite
Formula: ZnS
Reference: J. Zolan Collec.
Stilbite-Ca
Formula: NaCa4[Al9Si27O72] · nH2O
Habit: radiating aggregates
Colour: tan
Description: Small aggregates with laumontite in fractures.
Reference: Dr. Wilfred Talbot specimens; Dave Busha collection.
Sulphur
Formula: S8
Reference: David Busha collection
Talc
Formula: Mg3Si4O10(OH)2
Habit: massive
Colour: light yellow
Description: Alteration found along faulted rocks.
Reference: Harold Moritz collection
Titanite
Formula: CaTi(SiO4)O
Reference: David Busha collection
Topaz
Formula: Al2(SiO4)(F,OH)2
Habit: prismatic with rhombic cross-section
Colour: pale brown to yellow to dark green
Description: massive to subhedral crystal to several cm, commonly coated with mica, clear euhedral crystals to 1.5 cm
Reference: J. Zolan, Harold Moritz, Dave Busha collections
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: P Cristofono collection, 2008
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Habit: subhedral elongate prismatic
Colour: white to colorless
Fluorescence: yellow-orange under SW UV
Description: Masses of tiny, needle-like crystals
Reference: Harold Moritz collection
Tungstenite ?
Formula: WS2
Colour: Dark-Metallic
Description: Very rare microcrystals possibly of this mineral occasionally found in marble. Analyses needed. This ID is very doubtful given that the only report of tungstenite (a rare alteration of scheelite or ferberite) from the adjacent Old Mine Park by Schairer (1931) (a summary of other information) is almost certainly a misspelling of tungstite. The scheelite (or ferberite) is restricted to the amphibolite and does not occur in the marble. These could be primary ferberite micro-crystals (see photos).
Reference: J. Zolan Collec.
Tungstite ?
Formula: WO3 · H2O
Description: Valid tungstite has only been reported in specimens from the 19th century that came from ferberite after scheelite pseudomorphs within adjacent Old Mine Park. The mineral occurs as a yellow alteration within the ferberite crystals. Ferberite has not been found outside of Old Mine Park.
Reference: J. Zolan Collec.
Zircon
Formula: Zr(SiO4)
Reference: Jeremy Zolan

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Bismuthinite2.DB.05Bi2S3
Bornite ?2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Cobaltite2.EB.25CoAsS
Galena2.CD.10PbS
Linnaeite2.DA.05Co2+Co3+2S4
Marcasite2.EB.10aFeS2
Molybdenite2.EA.30MoS2
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
Cuprite4.AA.10Cu2O
Ferberite4.DB.30FeWO4
Goethite4.00.α-Fe3+O(OH)
Hydrotungstite ?4.FJ.15WO3 · 2H2O
Hübnerite ?4.DB.30MnWO4
Ilmenite4.CB.05Fe2+TiO3
Lepidocrocite ?4.FE.15γ-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Pyrolusite ?4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Rutilated Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Tungstite ?4.FJ.10WO3 · H2O
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Bismutite5.BE.25(BiO)2CO3
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Malachite5.BA.10Cu2(CO3)(OH)2
Rosasite5.BA.10(Cu,Zn)2(CO3)(OH)2
Siderite5.AB.05FeCO3
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Devilline7.DD.30CaCu4(SO4)2(OH)6 · 3H2O
Epsomite ?7.CB.40MgSO4 · 7H2O
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Melanterite7.CB.35Fe2+(H2O)6SO4 · H2O
Pickeringite7.CB.85MgAl2(SO4)4 · 22H2O
Rozenite7.CB.15FeSO4 · 4H2O
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
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]
Almandine9.AD.25Fe2+3Al2(SiO4)3
Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
Axinite-(Fe)9.BD.20Ca2Fe2+Al2BSi4O15OH
Bavenite9.DF.25Ca4Be2Al2Si9O26(OH)2
Beryl9.CJ.05Be3Al2(Si6O18)
var: Emerald ?9.CJ.05Be3Al2(Si6O18)
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
Hedenbergite ?9.DA.15CaFe2+Si2O6
Heulandite-Ca9.GE.05(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Magnesio-hornblende9.DE.10☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Margarite9.EC.30CaAl2(Al2Si2O10)(OH)2
Marialite9.FB.15Na4Al3Si9O24Cl
Microcline9.FA.30K(AlSi3O8)
Milarite9.CM.05K2Ca4Al2Be4Si24O60 · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Stilbite-Ca9.GE.10NaCa4[Al9Si27O72] · nH2O
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Topaz9.AF.35Al2(SiO4)(F,OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Heulandite subgroup'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
'Margarodite'-
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Sulphur1.3.5.1S8
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite ?2.5.2.1Cu5FeS4
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 = 3:4
Linnaeite2.10.1.1Co2+Co3+2S4
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Cobaltite2.12.3.1CoAsS
Marcasite2.12.2.1FeS2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Tungstenite ?2.12.10.3WS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Pyrolusite ?4.4.1.4Mn4+O2
Rutile4.4.1.1TiO2
AX3
Tungstite ?4.5.2.1WO3 · H2O
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Lepidocrocite ?6.1.2.2γ-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Smithsonite14.1.1.6ZnCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Bismutite16a.3.5.1(BiO)2CO3
Malachite16a.3.1.1Cu2(CO3)(OH)2
Rosasite16a.3.1.2(Cu,Zn)2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Epsomite ?29.6.11.1MgSO4 · 7H2O
Gypsum29.6.3.1CaSO4 · 2H2O
Melanterite29.6.10.1Fe2+(H2O)6SO4 · H2O
Rozenite29.6.6.1FeSO4 · 4H2O
AB2(XO4)4·H2O
Pickeringite29.7.3.1MgAl2(SO4)4 · 22H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq·xH2O
Devilline31.6.1.1CaCu4(SO4)2(OH)6 · 3H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
A3(XO4)2·xH2O
Erythrite40.3.6.3Co3(AsO4)2 · 8H2O
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
Hübnerite ?48.1.1.1MnWO4
Scheelite48.1.2.1Ca(WO4)
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Acid Hydrated Molybdates and Tungstates
Hydrotungstite ?49.1.1.1WO3 · 2H2O
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
Grossular51.4.3b.2Ca3Al2(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 [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 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Axinite-(Fe)56.2.2.1Ca2Fe2+Al2BSi4O15OH
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)
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 63 - CYCLOSILICATES Condensed Rings
Condensed Rings (Milarite - Osumilite group)
Milarite63.2.1a.12K2Ca4Al2Be4Si24O60 · H2O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Hedenbergite ?65.1.3a.2CaFe2+Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 70 - INOSILICATES Column or Tube Structures
Column or Tube Structures with chains linked by Be
Bavenite70.5.3.1Ca4Be2Al2Si9O26(OH)2
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
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 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(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)
Al-Si Framework with other Be/Al/Si frameworks
Marialite76.3.1.1Na4Al3Si9O24Cl
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Heulandite-Ca77.1.4.1(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Stilbite-Ca77.1.4.3NaCa4[Al9Si27O72] · nH2O
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
Beryl
var: Emerald ?
-Be3Al2(Si6O18)
Fluorite
var: Chlorophane
-CaF2
'Heulandite subgroup'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Limonite'-(Fe,O,OH,H2O)
Magnesio-hornblende-☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
'Manganese Oxides'-
'Margarodite'-
Opal
var: Opal-AN
-SiO2 · nH2O
Quartz
var: Rutilated Quartz
-SiO2
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H ClinochloreMg5Al(AlSi3O10)(OH)8
H MelanteriteFe2+(H2O)6SO4 · H2O
H Stilbite-CaNaCa4[Al9Si27O72] · nH2O
H BaveniteCa4Be2Al2Si9O26(OH)2
H RozeniteFeSO4 · 4H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H TopazAl2(SiO4)(F,OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H PickeringiteMgAl2(SO4)4 · 22H2O
H Limonite(Fe,O,OH,H2O)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H AzuriteCu3(CO3)2(OH)2
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
H MargariteCaAl2(Al2Si2O10)(OH)2
H Opal (var: Opal-AN)SiO2 · nH2O
H MilariteK2Ca4Al2Be4Si24O60 · H2O
H LaumontiteCaAl2Si4O12 · 4H2O
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H JarositeKFe3+ 3(SO4)2(OH)6
H Rosasite(Cu,Zn)2(CO3)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H HydrozinciteZn5(CO3)2(OH)6
H DevillineCaCu4(SO4)2(OH)6 · 3H2O
H OpalSiO2 · nH2O
H Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H GypsumCaSO4 · 2H2O
H MalachiteCu2(CO3)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H ErythriteCo3(AsO4)2 · 8H2O
H Goethiteα-Fe3+O(OH)
H TalcMg3Si4O10(OH)2
H Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H AnniteKFe32+(AlSi3O10)(OH)2
H TungstiteWO3 · H2O
H EpsomiteMgSO4 · 7H2O
H Lepidocrociteγ-Fe3+O(OH)
H HydrotungstiteWO3 · 2H2O
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be BaveniteCa4Be2Al2Si9O26(OH)2
Be MilariteK2Ca4Al2Be4Si24O60 · H2O
Be Beryl (var: Emerald)Be3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
C SideriteFeCO3
C AzuriteCu3(CO3)2(OH)2
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C Bismutite(BiO)2CO3
C Rosasite(Cu,Zn)2(CO3)(OH)2
C SmithsoniteZnCO3
C DolomiteCaMg(CO3)2
C AragoniteCaCO3
C HydrozinciteZn5(CO3)2(OH)6
C MalachiteCu2(CO3)(OH)2
OOxygen
O ScheeliteCa(WO4)
O CalciteCaCO3
O BerylBe3Al2(Si6O18)
O GrossularCa3Al2(SiO4)3
O ClinochloreMg5Al(AlSi3O10)(OH)8
O MarialiteNa4Al3Si9O24Cl
O MelanteriteFe2+(H2O)6SO4 · H2O
O Stilbite-CaNaCa4[Al9Si27O72] · nH2O
O BaveniteCa4Be2Al2Si9O26(OH)2
O MicroclineK(AlSi3O8)
O RozeniteFeSO4 · 4H2O
O ZirconZr(SiO4)
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O TopazAl2(SiO4)(F,OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O PickeringiteMgAl2(SO4)4 · 22H2O
O Limonite(Fe,O,OH,H2O)
O SideriteFeCO3
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O AlmandineFe32+Al2(SiO4)3
O AzuriteCu3(CO3)2(OH)2
O CupriteCu2O
O AlbiteNa(AlSi3O8)
O FerberiteFeWO4
O MagnetiteFe2+Fe23+O4
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
O DiopsideCaMgSi2O6
O MargariteCaAl2(Al2Si2O10)(OH)2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Opal (var: Opal-AN)SiO2 · nH2O
O MilariteK2Ca4Al2Be4Si24O60 · H2O
O LaumontiteCaAl2Si4O12 · 4H2O
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O Bismutite(BiO)2CO3
O JarositeKFe3+ 3(SO4)2(OH)6
O Rosasite(Cu,Zn)2(CO3)(OH)2
O RutileTiO2
O SmithsoniteZnCO3
O PrehniteCa2Al2Si3O10(OH)2
O DolomiteCaMg(CO3)2
O IlmeniteFe2+TiO3
O FluorapatiteCa5(PO4)3F
O TitaniteCaTi(SiO4)O
O Quartz (var: Rutilated Quartz)SiO2
O AragoniteCaCO3
O HydrozinciteZn5(CO3)2(OH)6
O DevillineCaCu4(SO4)2(OH)6 · 3H2O
O OpalSiO2 · nH2O
O Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
O K Feldspar (var: Adularia)KAlSi3O8
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O GypsumCaSO4 · 2H2O
O MalachiteCu2(CO3)(OH)2
O PhlogopiteKMg3(AlSi3O10)(OH)2
O ErythriteCo3(AsO4)2 · 8H2O
O Goethiteα-Fe3+O(OH)
O TalcMg3Si4O10(OH)2
O Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O AnniteKFe32+(AlSi3O10)(OH)2
O TungstiteWO3 · H2O
O HübneriteMnWO4
O HedenbergiteCaFe2+Si2O6
O Beryl (var: Emerald)Be3Al2(Si6O18)
O EpsomiteMgSO4 · 7H2O
O Lepidocrociteγ-Fe3+O(OH)
O PyrolusiteMn4+O2
O HydrotungstiteWO3 · 2H2O
FFluorine
F FluoriteCaF2
F TopazAl2(SiO4)(F,OH)2
F Fluorite (var: Chlorophane)CaF2
F FluorapatiteCa5(PO4)3F
NaSodium
Na MarialiteNa4Al3Si9O24Cl
Na Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Na Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
MgMagnesium
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg PickeringiteMgAl2(SO4)4 · 22H2O
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg TalcMg3Si4O10(OH)2
Mg Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg EpsomiteMgSO4 · 7H2O
AlAluminium
Al BerylBe3Al2(Si6O18)
Al GrossularCa3Al2(SiO4)3
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al MarialiteNa4Al3Si9O24Cl
Al Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Al BaveniteCa4Be2Al2Si9O26(OH)2
Al MicroclineK(AlSi3O8)
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al TopazAl2(SiO4)(F,OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al PickeringiteMgAl2(SO4)4 · 22H2O
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al AlmandineFe32+Al2(SiO4)3
Al AlbiteNa(AlSi3O8)
Al Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Al MargariteCaAl2(Al2Si2O10)(OH)2
Al MilariteK2Ca4Al2Be4Si24O60 · H2O
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Al PrehniteCa2Al2Si3O10(OH)2
Al Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Al K Feldspar (var: Adularia)KAlSi3O8
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Al AnniteKFe32+(AlSi3O10)(OH)2
Al Beryl (var: Emerald)Be3Al2(Si6O18)
SiSilicon
Si BerylBe3Al2(Si6O18)
Si GrossularCa3Al2(SiO4)3
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si MarialiteNa4Al3Si9O24Cl
Si Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Si BaveniteCa4Be2Al2Si9O26(OH)2
Si MicroclineK(AlSi3O8)
Si ZirconZr(SiO4)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si TopazAl2(SiO4)(F,OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si AlmandineFe32+Al2(SiO4)3
Si AlbiteNa(AlSi3O8)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Si DiopsideCaMgSi2O6
Si MargariteCaAl2(Al2Si2O10)(OH)2
Si Opal (var: Opal-AN)SiO2 · nH2O
Si MilariteK2Ca4Al2Be4Si24O60 · H2O
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si PrehniteCa2Al2Si3O10(OH)2
Si TitaniteCaTi(SiO4)O
Si Quartz (var: Rutilated Quartz)SiO2
Si OpalSiO2 · nH2O
Si Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Si K Feldspar (var: Adularia)KAlSi3O8
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si TalcMg3Si4O10(OH)2
Si Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si AnniteKFe32+(AlSi3O10)(OH)2
Si HedenbergiteCaFe2+Si2O6
Si Beryl (var: Emerald)Be3Al2(Si6O18)
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S MelanteriteFe2+(H2O)6SO4 · H2O
S RozeniteFeSO4 · 4H2O
S SphaleriteZnS
S PyriteFeS2
S MarcasiteFeS2
S PickeringiteMgAl2(SO4)4 · 22H2O
S ChalcopyriteCuFeS2
S MolybdeniteMoS2
S BismuthiniteBi2S3
S JarositeKFe3+ 3(SO4)2(OH)6
S SulphurS8
S LinnaeiteCo2+Co23+S4
S GalenaPbS
S DevillineCaCu4(SO4)2(OH)6 · 3H2O
S GypsumCaSO4 · 2H2O
S PyrrhotiteFe7S8
S CobaltiteCoAsS
S TungsteniteWS2
S BorniteCu5FeS4
S EpsomiteMgSO4 · 7H2O
ClChlorine
Cl MarialiteNa4Al3Si9O24Cl
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K MilariteK2Ca4Al2Be4Si24O60 · H2O
K JarositeKFe3+ 3(SO4)2(OH)6
K K Feldspar (var: Adularia)KAlSi3O8
K PhlogopiteKMg3(AlSi3O10)(OH)2
K AnniteKFe32+(AlSi3O10)(OH)2
CaCalcium
Ca ScheeliteCa(WO4)
Ca FluoriteCaF2
Ca CalciteCaCO3
Ca GrossularCa3Al2(SiO4)3
Ca Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Ca BaveniteCa4Be2Al2Si9O26(OH)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Ca DiopsideCaMgSi2O6
Ca MargariteCaAl2(Al2Si2O10)(OH)2
Ca Fluorite (var: Chlorophane)CaF2
Ca MilariteK2Ca4Al2Be4Si24O60 · H2O
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Ca PrehniteCa2Al2Si3O10(OH)2
Ca DolomiteCaMg(CO3)2
Ca FluorapatiteCa5(PO4)3F
Ca TitaniteCaTi(SiO4)O
Ca AragoniteCaCO3
Ca DevillineCaCu4(SO4)2(OH)6 · 3H2O
Ca Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca GypsumCaSO4 · 2H2O
Ca Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca HedenbergiteCaFe2+Si2O6
TiTitanium
Ti RutileTiO2
Ti IlmeniteFe2+TiO3
Ti TitaniteCaTi(SiO4)O
MnManganese
Mn HübneriteMnWO4
Mn PyrolusiteMn4+O2
FeIron
Fe MelanteriteFe2+(H2O)6SO4 · H2O
Fe RozeniteFeSO4 · 4H2O
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe MarcasiteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe SideriteFeCO3
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe AlmandineFe32+Al2(SiO4)3
Fe ChalcopyriteCuFeS2
Fe FerberiteFeWO4
Fe MagnetiteFe2+Fe23+O4
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe IlmeniteFe2+TiO3
Fe PyrrhotiteFe7S8
Fe Goethiteα-Fe3+O(OH)
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe HedenbergiteCaFe2+Si2O6
Fe BorniteCu5FeS4
Fe Lepidocrociteγ-Fe3+O(OH)
CoCobalt
Co LinnaeiteCo2+Co23+S4
Co ErythriteCo3(AsO4)2 · 8H2O
Co CobaltiteCoAsS
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcopyriteCuFeS2
Cu CupriteCu2O
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu Rosasite(Cu,Zn)2(CO3)(OH)2
Cu DevillineCaCu4(SO4)2(OH)6 · 3H2O
Cu MalachiteCu2(CO3)(OH)2
Cu BorniteCu5FeS4
ZnZinc
Zn SphaleriteZnS
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn Rosasite(Cu,Zn)2(CO3)(OH)2
Zn SmithsoniteZnCO3
Zn HydrozinciteZn5(CO3)2(OH)6
AsArsenic
As ErythriteCo3(AsO4)2 · 8H2O
As CobaltiteCoAsS
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo MolybdeniteMoS2
WTungsten
W ScheeliteCa(WO4)
W FerberiteFeWO4
W TungsteniteWS2
W TungstiteWO3 · H2O
W HübneriteMnWO4
W HydrotungstiteWO3 · 2H2O
PbLead
Pb GalenaPbS
BiBismuth
Bi BismuthiniteBi2S3
Bi BismuthBi
Bi Bismutite(BiO)2CO3

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)
Heitner, Howard I. (1998): Window of Opportunity, Field Collecting at Trumbull, Connecticut - Abstract in Contributed Papers in Specimen Mineralogy, 24th Rochester Mineralogical Symposium. Rocks & Minerals: 73(3): 198.
Garnet Gazette (2004), field trip report (December 2004): 3.


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