Coe's Mine (Sedgewick and Buell mine; Kyanite and ilmenite locality), Litchfield, Litchfield County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Coe's Mine (Sedgewick and Buell mine; Kyanite and ilmenite locality) | - not defined - |
| Litchfield | - not defined - |
| Litchfield County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° North , 73° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
KΓΆppen climate type:
Mindat Locality ID:
254549
Long-form identifier:
mindat:1:2:254549:6
GUID (UUID V4):
de272557-1430-47fb-b3f1-663254d3dd5c
A locality on U. S. Route 202 in NE Litchfield. The locality is not open. It is private, developed, residential property, protected by the owner who was kind enough to let this information be posted. Please respect the property and do not trespass! There are no dumps for collecting in any case, minerals and small mine shafts were discovered during landscaping with heavy equipment. In 2018 the property was sold and the boulders described below and in the locality photographs were also sold.
This property encompasses two old mine shafts and other prospects, one is believed to be the 19th century mining undertaken by Sedgewick and Buell under the direction of Israel Coe. Another is quite possibly the 18th century work of the famous Samuel Higley. It also apparently solves the mystery of the origin of a large boulder that supplied many specimens of kyanite to 19th century museums.
Landscaping activity around 2010 by the former owner uncovered many boulders rich in large kyanite and ilmenite porphyroblasts in Rowe schist and discordant masses of white quartz. They are identical to this description by Brace (1819) (and repeated in Robinson (1825)) of a large kyanite-rich boulder from an unspecified Litchfield location that is most likely this site:
Cyanite or Sappar, are found in great quantities, especially in Harwinton and Litchfield. A crystalline mass of this was found a few years ago, weighing probably 16 cwt. [1600 pounds]; it lay on mica slate [schist] ridge, and undoubtedly had been formerly imbedded [sic] in the slate. Beautiful white talc, and small crystals of sulphuret of iron, are disseminated in the mass. Specimens of this mass are in almost all the cabinets in America. Smaller masses have been found associated with feldspar.
The mineralogy is similar to that described for areas just to the north and east of Town Farm Road (see http://www.mindat.org/loc-251426.html). Two mine shafts and other evidence of prospecting have also been discovered. The location and details of the site match the mysterious place mentioned by several historians but first by Shepard (1837):
A number of rich fragments and even crystals of large dimensions of vitreous copper [chalcocite], have lately been forwarded for examination by Mr. ISRAEL COE of Wolcottville, who states that they were found about two miles from that village on rather an elevated ridge of land, among the rubbish surrounding an excavation made by an EnglishΒman prior to the revolutionary war. The tradition is, that the ore obtained was taken to New York and put on board a vessel for England, and that the vessel having been burnt, the enterprise was pursued no farther. Several of the samples are attached to pieces of quartz, and are attended by small quantities of green malachite and chrysocolla. Variegated copper [bornite] likewise occurs to a small extent, blended with the vitreous copper [chalcocite]. Accompanying the specimens, were also sent samples of yellow copper-pyrites [chalcopyrite], associated with iron-pyrites [pyrite] in quartz, and which were stated to have been found within a short distance of the excavation.
While chalcopyrite with malachite coatings have been found, it seems the ilmenite was likely mistaken for chalcocite, to which it bears similarities, but the large crystals and fragments thereof are typical of the area (and this site) and ilmenite's brittle nature. The site is 2 miles from downtown Torrington (formerly Wolcottville) and on an elevated ridge. This ridge may in fact be the place called "Toll Gate Hill" (the name is not on any maps) described below by Hubbard (1905) (the old toll gate for the Torrington-Litchfield Road (now U. S. Route 202) was just NE of the site):
a vein of iron pyrites appears near the Torrington line, and a shaft about 15 feet has been sunk. To the west of this shaft, and at the right of and a short distance from the top of Toll Gate Hill, a number of holes have been dug, apparently by parties seeking ore. It is said that a shaft, begun before the Revolutionary War, was sunk in this locality on a vein of copper ore, but I have never been able to discover it. The only evidence of mineral in the excavations near Toll Gate Hill are a few crystals of Washingtonite or ilmenite, a commircially valuless [sic] ore of iron, perhaps this was what induced the ancient miners to labor, thinking it of value.
Note the similar reference to a pre-Revolutionary War mine. Orcutt (1878) in his History of Torrington says something similar about the history, and even more accurately about the minerals, but gives a name for a hill again not on any map:
Specimens of almost pure ore (amorphous), others vitrified, and crystalized [sic], of various colors, have repeatedly been obtained at the summit of Occident hill (Chestnut hill), and afford presumptive evidence of the existence of a rich copper ore bed in that locality. Tradition says that before the revolutionary war an English miner discovered this ore bed; made considerable excavations; obtained valuable products, which he shipped for England, he going in the same vessel, and that the vessel and himself were lost at sea.
The copper is found in a mica slate [schist] ledge and associated with quartz distinctively. Some of the specimens are carbonates and of beautiful green crystals [malachite]. The yellow or copper pyrites [chalcopyite] are also found.
The copper is found in a mica slate [schist] ledge and associated with quartz distinctively. Some of the specimens are carbonates and of beautiful green crystals [malachite]. The yellow or copper pyrites [chalcopyite] are also found.
Kilbourne (1859), in his discussion about mining by Albert Sedgwick and John Buell in the area just to the north of U. S Route 202 added this tidbit about a farm on the south side of the road (as shown on the 1859 map of the town):
On the farm of Mr. Gilbert, one-half mile from this location, was recently found an old shaft 15 feet deep which is supposed to have been sunk before the Revolution. This has been cleaned out and sunk 30 feet upon a small vein of iron and copper running together. The quantity of copper found is not yet sufficient to render the digging profitable, the mine having been but partially developed.
None of these references has been linked to any mineral or mining locality before, and there is enough common information in them to suggest these are all the same place. The Gilbert Farm reference gives it a specific location, coincident with this now residential property whose characteristics match the references. In addition, Domonell (1994) makes a strong case that the "Englishman" was none other than Samuel Higley, operator of the Higley copper mine (now in East Granby and just south of the Old Newgate Mine and Prison) and minter of the first coins in America - the Higley copper! Samuel Higley was supposedly lost at sea in 1737 with a shipment of his ore to England. Or could it have been Isaac Higley, Samuel's half-brother who was one of the first settlers who came to Torrington before 1740? He states there is no direct evidence they did any mining in Torrington (or Litchfield) but the circumstantial evidence is certainly compelling.
While there is malachite present here, green fuchsite mica is much more abundant and it may have inspired much of the mining effort, as the workings are mostly driven into what appears to be schist barren of copper minerals but rich in fuchsite. The worthless nature of fuchsite was not known to the miners, but they certainly eventually found out. Though it must have been very confusing and frustrating for them to see so much green - nearly always an excellent indicator of copper - and yet not end up with any!
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Habit: fibrous to elongated prisms Colour: pale greenish white to green Description: Massive, fibrous, to crudely crystallized in calc-silicate rocks, with grossular, albite, calcite, quartz. Fibrous to acicular green layers in epidote (altered amphibolite). References: |
| β Albite Formula: Na(AlSi3O8) Habit: prismatic Colour: white, gray, peach Description: Mostly anhedral grains and masses in schist, calc-silicate, amphibolite, and chlorite rich rocks. Small (<1 cm) crystals exposed in vugs where calcite naturally etched out. Large (>5 cm) subhedral crystals in quartz/albite/mica boudins in schist, with kyanite and ilmenite. References: |
| β Almandine Formula: Fe2+3Al2(SiO4)3 Habit: dodecahedral Colour: maroon Description: Mostly as relatively small crystals <1 cm in schist. References: |
| β Aragonite Formula: CaCO3 Habit: botryoidal encrustations Colour: white Fluorescence: yellow-white Description: As botryoidal, slightly waxy crusts forming from meteoric water percolating through fractured amphibolite and calc-silicate rocks and deposited in shallow open spaces. Impregnated with sand grains and minor twigs, etc. References: |
| β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 Colour: black Description: Coarse anhedral crystals in coarse-grained boudins in schist, with chlorite, ilmenite, albite, quartz. References: |
| β Calcite Formula: CaCO3 Habit: massive Colour: white Description: As masses in calc-silicate rock, or in brittle faults. Much of it naturally etched or dissolved away exposing other crystals that seemed to form in vugs. References: |
| β Chabazite-Ca Formula: (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O Habit: rhombohedral Colour: yellow-orange Description: Micro crystals to a couple of mm in brittle faults, but well formed and translucent. References: |
| β Chalcopyrite Formula: CuFeS2 Habit: massive Description: Blebs to 1-2 cm at most, but commonly surrounded by films of green malachite and brown limonite on adjacent albite, quartz or schist. References: |
| β 'Chlorite Group' Habit: subhedral to fine-grained massive Colour: dark green Description: Scattered in schist but notably concentrated as pure, fine-grained masses at the discordant contact of schist with quartz masses, associated with fluorapatite, albite, ilmenite, magnetite, rutile. References: |
| βͺ Corundum Formula: Al2O3 Habit: hexagonal tabular Colour: pale lavender Description: A 2 cm, tabular, hexagonal crystal is present in a cabinet specimen of kyanite at Harvard that was part of Brace's large boulder. References: |
| β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Habit: mostly massive, elongated hexagonal prisms in chlorite Colour: pistachio green Description: Mostly as a massive alteration of amphibolite as bands with green actinolite, but rarely as elongated hexagonal prisms in fine-grained chlorite. References: |
| β Fluorapatite Formula: Ca5(PO4)3F Habit: Hexagonal prisms Colour: pale gray to white Fluorescence: pale yellow-white Description: Euhedral prisms to 1.5 cm or so found in fine-grained chlorite concentrations. References: |
| β Goethite Formula: Ξ±-Fe3+O(OH) Habit: massive Colour: dark brown Description: In local rocks as alterations of pyrite and chalcopyrite. But also as glacial erratic cobbles and pebbles, some cementing brecciated quartzite resembling the Dalton Formation. References: |
| β Grossular Formula: Ca3Al2(SiO4)3 Habit: dodecahedral Colour: pale orange Description: Mostly very fine-grained and massive within calc-silicate rocks, with actinolite, calcite, quartz. Micro crystals in vugs where calcite has naturally dissolved out. References: |
| β Hematite Formula: Fe2O3 Habit: flaky, massive Colour: black, red Description: Fine-grained specular black grains in joints in epidote altered amphibolite. Also as red, compact earthy component of pseudomorphs after ilmenite (with magnetite and rutile, to varying degrees), and as red films on other minerals. References: |
| β 'Hornblende Root Name Group' Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 Habit: elongated prismatic Colour: dark green to black Description: As a granular component of amphibolite, but subhedral crystals to a few cm more obvious in hornblende gneiss. Some more schistose gneiss boulders show interesting 5-6 cm acicular flabellate groups. |
| βͺ Ilmenite Formula: Fe2+TiO3 Habit: platy to tabular Colour: black submetallic Description: Found in three modes: 1. As small (<1 cm) crystals scattered in schist, gneiss and amphibolite. 2. As deformed platy concentrations in quartz/albite/mica boudins in schist. Loose boudins as boulders vary in size from "turtle shell" pieces, to boulders pushing a meter across with overlapping, curved crystals or aggregates on the order of 10 cm.
3. As undeformed, tabular crystals exceeding 10-15 cm (mostly broken so hard to say exactly), 1 to 15 mm thick, that grew rooted in the chlorite-rich contact of schist with discordant quartz masses. These crystals typically oriented edge-on to the contact and surrounded by massive quartz that evidently filled in after they crystallized. Most of these "ilmenite" crystals are actually pseudomorphed by, to varying degrees, magnetite, hematite, rutile, chlorite, even within the same crystal. As ilmenite is weakly magnetic, it is easy to tell the strongly magnetic magnetite pseudos from ilmenite. The rutile/hematite pseudos are reddish and non-magnetic and blood-red, acicular microcrystals can be seen in them under a scope. References: |
| β 'K Feldspar' Colour: white Description: Wedge-shaped crystals to 6mm in small alpine cleft type gash. References: |
| β 'K Feldspar var. Adularia' Formula: KAlSi3O8 Colour: white Description: Wedge-shaped crystals to 6mm in small alpine cleft type gash. References: |
| βͺ Kyanite Formula: Al2(SiO4)O Habit: elngated, tabular prisms Colour: gray to pale blue-green with sky blue cores Description: Occurs in two modes: 1. As gray crystals in schist and quartz/albite/mica boudins, randomly oriented along the foliation, crystals typically reaching 5 cm. These resistant crystals form rough surfaces on schist boulders where they are abundant. 2: As very long crystals to 10s of cms, commonly concentrated in parallel to subparallel arrangement in massive quartz and adjacent schist. These crystals are pale blue-green with sky blue cores along their lengths. There are +/- 1-meter cone to fan-shaped boulders with solid concentrations of these crystals. References: |
| β Magnetite Formula: Fe2+Fe3+2O4 Habit: granular, massive Colour: steel gray to black Description: As grains in chlorite-fluorapatite-albite rich rock, or pseudomorphous after undeformed ilmenite crystals in quartz, distinguished by their strong magnetism. Hematite and rutile replacements can accompany magnetite within the same pseudomorph. References: |
| β Malachite Formula: Cu2(CO3)(OH)2 Habit: films Colour: green Description: As green halos films/crusts around altered chalcopyrite blebs or alone on rock surfaces. References: |
| β Microcline Formula: K(AlSi3O8) Habit: anhedral Colour: pink Description: Coarse crystals with epidote, quartz, minor ilmenite in some cobbles that may be glacial erratics. References: |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 Habit: anhedral Description: As a major, fine-grained component of the Rowe schist, coarser grained in some quartz/albite/ilmenite boudins or boulders. References: |
| β Muscovite var. Damourite Formula: KAl2(AlSi3O10)(OH)2 Habit: pseudomorphs after kyanite Colour: yellow-brown Description: Waxy, translucent pseudomorphs after kyanite in a quartz cobble. References: |
| β Muscovite var. Fuchsite Formula: K(Al,Cr)3Si3O10(OH)2 Habit: micaceous grains Colour: emerald green Description: Streaks and zones of green color in muscovite-annite schist. XRF reveals 0.56% Cr oxide. This may have lead miners to chase what they thought was "copper ore" in what today is obviously barren schist (though there is some malachite here as well). Also confirmed as muscovite via Raman spectroscopy. References: |
| β Pyrite Formula: FeS2 Habit: anhedral Description: Mostly massive grains/blebs and much altered to goethite. References: |
| β Quartz Formula: SiO2 Habit: massive Colour: light smoky to white Description: As a granular component of the Rowe Schist, massive component of calc-silicate rocks, drusy crystals in brittle fault mineralzation, in "turtle shell" boudins in schist, but most obvious as large meter or more scale discordant white masses in schist, typically with ilmenite and chlorite along the contact. Crystals very rare and generally micros. References: |
| β Rutile Formula: TiO2 Habit: massive, acicular, twinned reticular nets Colour: red Description: As scattered grains in schist, rarely in vugs as twinned, reticular nets to a cm, most commonly as a fine-grained replacement of undeformed ilmenite found in the quartz masses, with hematite and magnetite to varying degrees, even within the same crystal. References: |
| βͺ Staurolite Formula: Fe2+2Al9Si4O23(OH) Habit: elongated prisms Colour: dark brown Description: Crystals to 4-5 cm in schist, but mostly a few loose cobbles that were likely dropped on the site by glaciation from the north, across Rt. 202, where they are common. References: |
| β 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O Habit: fan-shaped aggregates of tabular micro-crystals Colour: white Description: Micro-crystals in fractures and small voids, alone or associated with chabazite. References: |
| β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z Habit: acicular Colour: black Description: Sprays of acicular crystals radiating from the terminations of thicker crystals are preserved in a quartz cobble several cm across. References: |
| β Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 Habit: fibrous to acicular Colour: white Description: In calc-silicate assemblage, but rarer than the more common actinolite. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Goethite | 4.00. | Ξ±-Fe3+O(OH) |
| β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| β | Hematite | 4.CB.05 | Fe2O3 |
| β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| β | Corundum | 4.CB.05 | Al2O3 |
| β | Quartz | 4.DA.05 | SiO2 |
| β | Rutile | 4.DB.05 | TiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Aragonite | 5.AB.15 | CaCO3 |
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| Group 9 - Silicates | |||
| β | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| β | Grossular | 9.AD.25 | Ca3Al2(SiO4)3 |
| β | Kyanite | 9.AF.15 | Al2(SiO4)O |
| β | Staurolite | 9.AF.30 | Fe2+2Al9Si4O23(OH) |
| β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| β | Tremolite | 9.DE.10 | β»Ca2Mg5(Si8O22)(OH)2 |
| β | Actinolite | 9.DE.10 | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | var. Fuchsite | 9.EC.15 | K(Al,Cr)3Si3O10(OH)2 |
| β | var. Damourite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | Microcline | 9.FA.30 | K(AlSi3O8) |
| β | Albite | 9.FA.35 | Na(AlSi3O8) |
| β | Chabazite-Ca | 9.GD.10 | (Ca,K2,Na2)2[Al2Si4O12]2 Β· 12H2O |
| Unclassified | |||
| β | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
| β | 'Chlorite Group' | - | |
| β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| β | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] Β· nH2O |
| β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| β | 'Hornblende Root Name Group' | - | β»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
| β | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| H | β Goethite | Ξ±-Fe3+O(OH) |
| H | β Malachite | Cu2(CO3)(OH)2 |
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | β Staurolite | Fe22+Al9Si4O23(OH) |
| H | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| H | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| H | β Muscovite var. Damourite | KAl2(AlSi3O10)(OH)2 |
| H | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| B | Boron | |
| B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| C | Carbon | |
| C | β Aragonite | CaCO3 |
| C | β Calcite | CaCO3 |
| C | β Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | β K Feldspar var. Adularia | KAlSi3O8 |
| O | β Albite | Na(AlSi3O8) |
| O | β Aragonite | CaCO3 |
| O | β Almandine | Fe32+Al2(SiO4)3 |
| O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | β Calcite | CaCO3 |
| O | β Corundum | Al2O3 |
| O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | β Fluorapatite | Ca5(PO4)3F |
| O | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| O | β Goethite | Ξ±-Fe3+O(OH) |
| O | β Grossular | Ca3Al2(SiO4)3 |
| O | β Hematite | Fe2O3 |
| O | β Ilmenite | Fe2+TiO3 |
| O | β Kyanite | Al2(SiO4)O |
| O | β Magnetite | Fe2+Fe23+O4 |
| O | β Malachite | Cu2(CO3)(OH)2 |
| O | β Microcline | K(AlSi3O8) |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | β Quartz | SiO2 |
| O | β Rutile | TiO2 |
| O | β Staurolite | Fe22+Al9Si4O23(OH) |
| O | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| O | β Muscovite var. Damourite | KAl2(AlSi3O10)(OH)2 |
| O | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| F | Fluorine | |
| F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | β Fluorapatite | Ca5(PO4)3F |
| F | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Na | Sodium | |
| Na | β Albite | Na(AlSi3O8) |
| Na | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Mg | Magnesium | |
| Mg | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Al | Aluminium | |
| Al | β K Feldspar var. Adularia | KAlSi3O8 |
| Al | β Albite | Na(AlSi3O8) |
| Al | β Almandine | Fe32+Al2(SiO4)3 |
| Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | β Corundum | Al2O3 |
| Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Al | β Grossular | Ca3Al2(SiO4)3 |
| Al | β Kyanite | Al2(SiO4)O |
| Al | β Microcline | K(AlSi3O8) |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | β Staurolite | Fe22+Al9Si4O23(OH) |
| Al | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Al | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Al | β Muscovite var. Damourite | KAl2(AlSi3O10)(OH)2 |
| Al | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Si | Silicon | |
| Si | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | β K Feldspar var. Adularia | KAlSi3O8 |
| Si | β Albite | Na(AlSi3O8) |
| Si | β Almandine | Fe32+Al2(SiO4)3 |
| Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Si | β Grossular | Ca3Al2(SiO4)3 |
| Si | β Kyanite | Al2(SiO4)O |
| Si | β Microcline | K(AlSi3O8) |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | β Quartz | SiO2 |
| Si | β Staurolite | Fe22+Al9Si4O23(OH) |
| Si | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Si | β Muscovite var. Damourite | KAl2(AlSi3O10)(OH)2 |
| Si | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| P | Phosphorus | |
| P | β Fluorapatite | Ca5(PO4)3F |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| S | β Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| K | Potassium | |
| K | β K Feldspar var. Adularia | KAlSi3O8 |
| K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| K | β Microcline | K(AlSi3O8) |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| K | β Muscovite var. Damourite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | β Aragonite | CaCO3 |
| Ca | β Calcite | CaCO3 |
| Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | β Fluorapatite | Ca5(PO4)3F |
| Ca | β Grossular | Ca3Al2(SiO4)3 |
| Ca | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | β Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Ca | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Ti | Titanium | |
| Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | β Ilmenite | Fe2+TiO3 |
| Ti | β Rutile | TiO2 |
| Cr | Chromium | |
| Cr | β Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
| Fe | Iron | |
| Fe | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | β Almandine | Fe32+Al2(SiO4)3 |
| Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | β Goethite | Ξ±-Fe3+O(OH) |
| Fe | β Hematite | Fe2O3 |
| Fe | β Ilmenite | Fe2+TiO3 |
| Fe | β Magnetite | Fe2+Fe23+O4 |
| Fe | β Pyrite | FeS2 |
| Fe | β Staurolite | Fe22+Al9Si4O23(OH) |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Malachite | Cu2(CO3)(OH)2 |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Laurentides DomainDomain
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References
Coe's Mine, Litchfield, Litchfield County, Connecticut, USA