Pelton's Quarry, Portland, Middlesex Co., Connecticut, USAi
| Regional Level Types | |
|---|---|
| Pelton's Quarry | Quarry |
| Portland | - not defined - |
| Middlesex Co. | County |
| Connecticut | State |
| USA | Country |
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Key
Latitude & Longitude (WGS84):
41° 36' 4'' North , 72° 34' 36'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lake Pocotopaug | 3,436 (2017) | 5.5km |
| Cromwell | 13,750 (2017) | 5.7km |
| Portland | 5,862 (2017) | 6.2km |
| East Hampton | 2,691 (2017) | 6.8km |
| Middletown | 46,756 (2017) | 7.5km |
Some references such as Otfinoski (1988) state that pegmatite quarrying probably began in the Middletown district in 1782 [sic] when Portland resident Ralph Pelton, Deacon of the Central Church, began working this quarry near his home just east of Collins Hill. However, Beers' (1884) The History of Middlesex County 1635-1885 states:
The fine feldspar mine, near Deacon Ralph PELTON's, has been worked by him since 1872. Several thousand tons of the stone have been taken out. A sample of the feldspar taken to the Centennial was pronounced the finest there. Fine beryls, garnets, etc., have been found here.
THE FELDSPAR MILL, near Deacon Ralph PELTON's, was built by him in 1877. The grinding is done by two stone chasers about five feet in diameter, moving around upon a bedstone of the same material. The crushed feldspar then passes to a revolving sieve, and thence to a cylinder, containing 3,300 pounds of Norway pebbles, of 18 revolutions per minute, where it is finely pulverized.
THE FELDSPAR MILL, near Deacon Ralph PELTON's, was built by him in 1877. The grinding is done by two stone chasers about five feet in diameter, moving around upon a bedstone of the same material. The crushed feldspar then passes to a revolving sieve, and thence to a cylinder, containing 3,300 pounds of Norway pebbles, of 18 revolutions per minute, where it is finely pulverized.
Somehow, 1872 was transposed to 1782 and the error was perpetuated. This is supported by Shepard (1837), who surveyed quarrying throughout the state in the 1830s and does not mention the Pelton Quarry, but discusses the Tollgate "China Stone" Quarry in Middletown numerous times. Nor does Robinson (1825).
The presence of Pelton's Quarry near Collins Hill has lead some to conclude that he started the quarrying at the hill's summit that later became the famous Strickland Quarry. But the presence of the old quarry at his property just to the east dispels that notion.
Little has been written about the mineralogy. Jarnot (1995), who gives the town incorrectly as Haddam, mentions "well-formed aquamarine crystals of a characteristic deep blue color, sometimes grading almost to black." Foye (1922) mentions that it "has long been inactive. It probably produced a number of rare minerals in its day, but it is now known as the source of two minerals, unique for the region, bismutite and samarskite [since found elsewhere]. Beryl and crystals of muscovite from the locality may be found in the Wesleyan museum." [see photos.] Wells (1887) analyzed a bismutite mass from here that was in the George Brush collection.
It has since been filled in. Coordinates are approximate. Private property.
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Standard Detailed Strunz Dana Chemical ElementsMineral List
23 valid minerals. 1 erroneous literature entry.
Rock Types Recorded
Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) Reference: Rocks & Min.: 70:403 |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Annite Formula: KFe2+3(AlSi3O10)(OH)2 Description: fka biotite Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Autunite Formula: Ca(UO2)2(PO4)2 · 11H2O Reference: Rocks & Min.: 70:403 |
| ⓘ Bertrandite Formula: Be4(Si2O7)(OH)2 Reference: Mineralogical Record (1975) 6:114-123 |
| ✪ Beryl Formula: Be3Al2(Si6O18) Habit: elongated hexagonal prisms with pinacoidal terminations Colour: blue-green, deep aqua to almost black Description: Very well-formed and gemmy crystals, typically doubly-terminated. Reference: Jarnot (1995) |
| ✪ Beryl var: Aquamarine Formula: Be3Al2Si6O18 Habit: elongated hexagonal prisms, typically terminated by pinacoids Colour: blue-green, deep aqua to almost black Description: well formed crystals with characteristic deep blue color sometimes grading to almost black Reference: Jarnot (1995) Connecticut Gems & Gem Minerals |
| ⓘ Bismuthinite Formula: Bi2S3 Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Bismutite Formula: (BiO)2CO3 Habit: massive replacement of bismuthinite Colour: yellow-green to gray Description: A mass in the George Brush collection was analyzed (Wells, 1887). Reference: Wells, H. L. (1887), Bismutosphaerite from Willimantic and Portland. American Journal of Science: s. 3, 34: 271-4. |
| ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series' Habit: tabular Colour: black with colorful iridescence Reference: Rocks & Min.: 70:403 |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Gahnite Formula: ZnAl2O4 Habit: octahedral Colour: dark green Description: translucent, micro crystals and anhedral aggregates with beryl in smoky quartz Reference: Harold Moritz collection |
| ⓘ 'Hornblende' Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ 'Limonite' Formula: (Fe,O,OH,H2O) Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: Rocks & Min.: 70:403 |
| ⓘ Microcline Formula: K(AlSi3O8) Reference: Rocks & Min.: 70:403 |
| ⓘ 'Monazite' Reference: Dana 6: 1061. |
| ✪ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Habit: pseudohexagonal tabular to elongated crystals Colour: dark silver to bronze Description: Sharp, dark, well-formed crystals. Reference: Januzzi, Ronald. (1976), Mineral Localities of Connecticut and Southeastern New York State. Taylor Associates/Mineralogical Press, Danbury. |
| ⓘ Opal Formula: SiO2 · nH2O Reference: Jones, Robert W. (1960): LUMINESCENT MINERALS OF CONNECTICUT, |
| ⓘ Opal var: Opal-AN Formula: SiO2 · nH2O Reference: Jones, Robert W. (1960): LUMINESCENT MINERALS OF CONNECTICUT, |
| ⓘ Quartz Formula: SiO2 Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Samarskite-(Y) Formula: YFe3+Nb2O8 Description: Reported in the old literature, but probably not analyzed, may be ishikawaite because ishikawaite was confirmed by analysis at the nearby Penfield Quarry. Reference: Dana 7:I:799. |
| ⓘ Schorl Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) Reference: Rocks & Min.: 70:403 |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ ' Formula: (Mn,Fe)(Ta,Nb)2O6 Description: Mistake for columbite-tantalite Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Torbernite Formula: Cu(UO2)2(PO4)2 · 12H2O Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Uraninite Formula: UO2 Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Uranophane Formula: Ca(UO2)2(SiO3OH)2 · 5H2O Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Xenotime-(Y) ? Formula: Y(PO4) Description: In a list of minerals without supporting information. Reference: Schooner, Richard. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut. |
| ⓘ Zircon Formula: Zr(SiO4) Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
| ⓘ Zircon var: Cyrtolite Formula: Zr[(SiO4),(OH)4] Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bismuthinite | 2.DB.05 | Bi2S3 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Gahnite | 4.BB.05 | ZnAl2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| ⓘ | var: Opal-AN | 4.DA.10 | SiO2 · nH2O |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Samarskite-(Y) | 4.DB.25 | YFe3+Nb2O8 |
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Bismutite | 5.BE.25 | (BiO)2CO3 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Autunite | 8.EB.05 | Ca(UO2)2(PO4)2 · 11H2O |
| ⓘ | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| ⓘ | Torbernite | 8.EB.05 | Cu(UO2)2(PO4)2 · 12H2O |
| ⓘ | Xenotime-(Y) ? | 8.AD.35 | Y(PO4) |
| Group 9 - Silicates | |||
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| ⓘ | Annite | 9.EC.20 | KFe2+3(AlSi3O10)(OH)2 |
| ⓘ | Bertrandite | 9.BD.05 | Be4(Si2O7)(OH)2 |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | var: Aquamarine | 9.CJ.05 | Be3Al2Si6O18 |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Schorl | 9.CK.05 | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
| ⓘ | Uranophane | 9.AK.15 | Ca(UO2)2(SiO3OH)2 · 5H2O |
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | var: Cyrtolite | 9.AD.30 | Zr[(SiO4),(OH)4] |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| ⓘ | 'Hornblende' | - | |
| ⓘ | 'Limonite' | - | (Fe,O,OH,H2O) |
| ⓘ | 'Monazite' | - | |
| ⓘ | 'Tantalite' ? | - | (Mn,Fe)(Ta,Nb)2O6 |
List of minerals arranged by Dana 8th Edition classification
| Group 2 - SULFIDES | |||
|---|---|---|---|
| AmBnXp, with (m+n):p = 2:3 | |||
| ⓘ | Bismuthinite | 2.11.2.3 | Bi2S3 |
| Group 5 - OXIDES CONTAINING URANIUM OR THORIUM | |||
| AXO2·xH2O | |||
| ⓘ | Uraninite | 5.1.1.1 | UO2 |
| Group 7 - MULTIPLE OXIDES | |||
| AB2X4 | |||
| ⓘ | Gahnite | 7.2.1.4 | ZnAl2O4 |
| ⓘ | Magnetite | 7.2.2.3 | Fe2+Fe3+2O4 |
| Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM | |||
| ABO4 | |||
| ⓘ | Samarskite-(Y) | 8.1.11.1 | YFe3+Nb2O8 |
| Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN | |||
| ⓘ | Bismutite | 16a.3.5.1 | (BiO)2CO3 |
| Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES | |||
| AB2(XO4)2·xH2O, containing (UO2)2+ | |||
| ⓘ | Autunite | 40.2a.1.1 | Ca(UO2)2(PO4)2 · 11H2O |
| ⓘ | Torbernite | 40.2a.13.1 | Cu(UO2)2(PO4)2 · 12H2O |
| Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN | |||
| A5(XO4)3Zq | |||
| ⓘ | Fluorapatite | 41.8.1.1 | Ca5(PO4)3F |
| Group 51 - NESOSILICATES Insular SiO4 Groups Only | |||
| Insular SiO4 Groups Only with cations in [6] and >[6] coordination | |||
| ⓘ | Almandine | 51.4.3a.2 | Fe2+3Al2(SiO4)3 |
| ⓘ | Spessartine | 51.4.3a.3 | Mn2+3Al2(SiO4)3 |
| Insular SiO4 Groups Only with cations in >[6] coordination | |||
| ⓘ | Zircon | 51.5.2.1 | Zr(SiO4) |
| Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations | |||
| Insular SiO4 Groups and Other Anions of Complex Cations with (UO2) | |||
| ⓘ | Uranophane | 53.3.1.2 | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O | |||
| Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination | |||
| ⓘ | Bertrandite | 56.1.1.1 | Be4(Si2O7)(OH)2 |
| Group 61 - CYCLOSILICATES Six-Membered Rings | |||
| Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution | |||
| ⓘ | Beryl | 61.1.1.1 | Be3Al2(Si6O18) |
| Six-Membered Rings with borate groups | |||
| ⓘ | Schorl | 61.3.1.10 | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings | |||
| Sheets of 6-membered rings with 2:1 layers | |||
| ⓘ | Annite | 71.2.2b.3 | KFe2+3(AlSi3O10)(OH)2 |
| ⓘ | Muscovite | 71.2.2a.1 | KAl2(AlSi3O10)(OH)2 |
| Group 75 - TECTOSILICATES Si Tetrahedral Frameworks | |||
| Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si | |||
| ⓘ | Quartz | 75.1.3.1 | SiO2 |
| Si Tetrahedral Frameworks - SiO2 with H2O and organics | |||
| ⓘ | Opal | 75.2.1.1 | SiO2 · nH2O |
| Group 76 - TECTOSILICATES Al-Si Framework | |||
| Al-Si Framework with Al-Si frameworks | |||
| ⓘ | Albite | 76.1.3.1 | Na(AlSi3O8) |
| ⓘ | Microcline | 76.1.1.5 | K(AlSi3O8) |
| Unclassified Minerals, Mixtures, etc. | |||
| ⓘ | Beryl var: Aquamarine | - | Be3Al2Si6O18 |
| ⓘ | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| ⓘ | 'Hornblende' | - | |
| ⓘ | 'Limonite' | - | (Fe,O,OH,H2O) |
| ⓘ | 'Monazite' | - | |
| ⓘ | Opal var: Opal-AN | - | SiO2 · nH2O |
| ⓘ | 'Tantalite' ? | - | (Mn,Fe)(Ta,Nb)2O6 |
| ⓘ | Xenotime-(Y) ? | - | Y(PO4) |
| ⓘ | Zircon var: Cyrtolite | - | Zr[(SiO4),(OH)4] |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Autunite | Ca(UO2)2(PO4)2 · 11H2O |
| H | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Zircon (var: Cyrtolite) | Zr[(SiO4),(OH)4] |
| H | ⓘ Limonite | (Fe,O,OH,H2O) |
| H | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| H | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| H | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| H | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| H | ⓘ Opal (var: Opal-AN) | SiO2 · nH2O |
| H | ⓘ Opal | SiO2 · nH2O |
| Be | Beryllium | |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| Be | ⓘ Beryl (var: Aquamarine) | Be3Al2Si6O18 |
| Be | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| B | Boron | |
| B | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| C | Carbon | |
| C | ⓘ Bismutite | (BiO)2CO3 |
| O | Oxygen | |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Beryl (var: Aquamarine) | Be3Al2Si6O18 |
| O | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Autunite | Ca(UO2)2(PO4)2 · 11H2O |
| O | ⓘ Bismutite | (BiO)2CO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| O | ⓘ Zircon (var: Cyrtolite) | Zr[(SiO4),(OH)4] |
| O | ⓘ Fluorapatite | Ca5(PO4)3F |
| O | ⓘ Limonite | (Fe,O,OH,H2O) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| O | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| O | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| O | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| O | ⓘ Opal (var: Opal-AN) | SiO2 · nH2O |
| O | ⓘ Gahnite | ZnAl2O4 |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Xenotime-(Y) | Y(PO4) |
| O | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| F | Fluorine | |
| F | ⓘ Fluorapatite | Ca5(PO4)3F |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | Aluminium | |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Beryl (var: Aquamarine) | Be3Al2Si6O18 |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Al | ⓘ Gahnite | ZnAl2O4 |
| Si | Silicon | |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Beryl (var: Aquamarine) | Be3Al2Si6O18 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Si | ⓘ Zircon (var: Cyrtolite) | Zr[(SiO4),(OH)4] |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Si | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Si | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| Si | ⓘ Opal (var: Opal-AN) | SiO2 · nH2O |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Opal | SiO2 · nH2O |
| P | Phosphorus | |
| P | ⓘ Autunite | Ca(UO2)2(PO4)2 · 11H2O |
| P | ⓘ Fluorapatite | Ca5(PO4)3F |
| P | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| P | ⓘ Xenotime-(Y) | Y(PO4) |
| S | Sulfur | |
| S | ⓘ Bismuthinite | Bi2S3 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Microcline | K(AlSi3O8) |
| K | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Autunite | Ca(UO2)2(PO4)2 · 11H2O |
| Ca | ⓘ Fluorapatite | Ca5(PO4)3F |
| Ca | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Mn | Manganese | |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Mn | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Fe | Iron | |
| Fe | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Schorl | Na(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Fe | ⓘ Limonite | (Fe,O,OH,H2O) |
| Fe | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Fe | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Cu | Copper | |
| Cu | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| Zn | Zinc | |
| Zn | ⓘ Gahnite | ZnAl2O4 |
| Y | Yttrium | |
| Y | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Y | ⓘ Xenotime-(Y) | Y(PO4) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon (var: Cyrtolite) | Zr[(SiO4),(OH)4] |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Nb | Niobium | |
| Nb | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Nb | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Ta | Tantalum | |
| Ta | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Bi | Bismuth | |
| Bi | ⓘ Bismutite | (BiO)2CO3 |
| Bi | ⓘ Bismuthinite | Bi2S3 |
| U | Uranium | |
| U | ⓘ Autunite | Ca(UO2)2(PO4)2 · 11H2O |
| U | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Dana 6:1061
Dana 7:I:799
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.
Shepard, Charles U. (1837): Report on the Geological Survey of Connecticut.
J. H. Beers & Co. (1884): The History of Middlesex County 1635-1885.
Wells, H. L. (1887), Bismutosphaerite from Willimantic and Portland. American Journal of Science: s. 3, 34: 271-4.
Foye, Wilbur. G., (1922): Mineral Localities in the Vicinity of Middletown, Connecticut. American Mineralogist: 7: 4-12.
Schairer, J. F. (1931): The Minerals of Connecticut. State Geological and Natural History Survey Bulletin 51.
Zodac, Peter (1941): The Andrews Quarry Near Portland, Conn. Rocks and Minerals: 16(5): 164-167.
Schooner, Richard. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut.
Stugard, Frederick, Jr. (1958): Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.
Jones, Robert W. (1960): Luminescent Minerals of Connecticut, a Guide to Their Properties and Locations.
Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.
Henderson, William A., Jr. (1975): The Bertrandites of Connecticut. Mineralogical Record: 6(3): 114-123.
Januzzi, Ronald E. (1976): Mineral Localities of CT and Southeastern NY State. Mineralogical Press, Danbury.
Otfinoski, Carla (1988): Pegmatite Quarrying In the Middletown District. Unpublished masters thesis. Wesleyan University, Middletown, Connecticut.
Jarnot, Bruce. (1995): Connecticut Gems & Gem Minerals. Rocks & Minerals (Connecticut Issue): 70(6): 378-382.
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 403.
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Pelton's Quarry, Portland, Middlesex Co., Connecticut, USA