Durham, Middlesex County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Durham | Town |
| Middlesex County | County |
| Connecticut | State |
| USA | Country |
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Durham is a town incorporated in 1708, named for Durham, England. Geologically, it straddles the Eastern Border Fault of the Triassic-Jurassic Hartford Basin (filled with continental conglomerates, sandstones, mudstones, organic-rich lacustrian shale and basalt) on the west and the Eastern Uplands of Connecticut (underlain locally by schist, gneiss and pegmatites) on the east. The variety of minerals found in town reflect the vastly different mineral-forming geo-environments on either side of the fault. Some of the sandstone of the Jurassic Portland Formation (known locally as brownstone) was quarried in the 19th century on either side of what is now state Route 17 near its intersection with state Route 68 and Maiden Lane. The eastern end of the former was once known as Quarry Street. Only vegetated escarpments remain. A major quarry in the Jurassic Holyoke Basalt (trap rock) is situated south of Reed's Gap in the cuesta ridge formed by the basalt on the western town border with neighboring Wallingford. Many unquarried pegmatites underlie topographic knobs, such as Moutn Pisgah, within the area known as Mica Hills between state Routes 77 and 79. There are a couple of pegmatite mineral prospects in that area.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities34 valid minerals.
* - Minerals that have never been found, but their existence is inferred in some way (e.g. from pseudomorphs)
Detailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) Localities: Durham, Middlesex County, Connecticut, USA Mica Hills pegmatites and prospects, Durham, Middlesex County, Connecticut, USA Pegmatite outcrops, Durham, Middlesex County, Connecticut, USA Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA ? (more information) |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 Localities: Habit: trapezohedral Colour: maroon Description: A few crystals near quartz segregations. |
| ⓘ Analcime Formula: Na(AlSi2O6) · H2O Habit: trapezohedral Colour: colorless Description: As micro crystals in mineralized fractures with quartz. References: |
| ⓘ Anhydrite Formula: CaSO4 Habit: tabular Description: Like at most trap rock localities, anhydrite crystallized early in the paragenesis in fractures and vesicles, but then dissolved away. Tabular molds in later-forming mineral assemblages (quartz, calcite, datolite) reveal its former presence. References: |
| ⓘ 'Apophyllite Group' Formula: AB4[Si8O20]X · 8H2O |
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Habit: short prismatec Colour: black Description: With anorthite one of the two major rock-forming constituents of the basalt and normally very fine-grained and not of collector interest. However, euhedral phenocrysts to about 1 cm rarely occur. References: |
| ⓘ Autunite Formula: Ca(UO2)2(PO4)2 · 10-12H2O References: |
| ⓘ Babingtonite Formula: Ca2Fe2+Fe3+Si5O14(OH) Localities: Habit: complex prisms Colour: black Description: Micro crystals, but very specular and well formed. |
| ⓘ Beryl Formula: Be3Al2(Si6O18) Localities: Description: Beryl crystals are found in clusters in the poorly developed quartz core(s) |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Calcite Formula: CaCO3 Habit: scalenohedral, rhombohedral Colour: white to clear Fluorescence: magenta under all wavelengths but best under MW Description: highly modified scalenohedrons (Brunet 1980) References: Brunet, William M. (1980) Minerals of the Trap Rock Ridges of the Connecticut Valley: With Emphasis on Reed's Gap Quarry near Durham. Rocks & Minerals, 55 (6) 232-235 doi:10.1080/00357529.1980.11764675 |
| ⓘ 'Chabazite' |
| ⓘ 'Chabazite var. Phacolite' |
| ⓘ Chalcopyrite Formula: CuFeS2 Habit: small crystals and massive Description: small bright crystals and massive |
| ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series' |
| ⓘ 'Columbite-Tantalite' Description: This material is likely columbite-Fe since this species is common in the Collins Hill formation and because these pegmatites contain substantial Fe. References: |
| ⓘ Datolite Formula: CaB(SiO4)(OH) |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F |
| ⓘ Fluorapophyllite-(K) Formula: KCa4(Si8O20)(F,OH) · 8H2O Habit: elongated prisms modified by pyramids and pinacoids or tabular dominated by pinacoids Colour: colorless, pale pink to white or pale yellow (tabular aggregates) Description: In fractures typically with calcite and datolite, crystals usually small <1 cm, as individual prismatic or botryoidal aggregates of tabular crystals that resemble typical prehnite aggregates except for their pale yellow color. References: |
| ✪ Fluorite Formula: CaF2 Habit: octahedral Colour: light ot medium green, purple Fluorescence: blue under all wavelengths Description: "Green octahedrons w/quartz and calcite crystals. Octahedrons up to ½” but larger broken crystals found. Also purple massive and micro crystals." Brunet (1980). Pawloski (2006) - crystals to 1.6 cm. References: Brunet, William M. (1980) Minerals of the Trap Rock Ridges of the Connecticut Valley: With Emphasis on Reed's Gap Quarry near Durham. Rocks & Minerals, 55 (6) 232-235 doi:10.1080/00357529.1980.11764675 |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Description: Pegmatites contain substantial iron; therefore, this garnet may be almandine. References: |
| ⓘ 'Gmelinite Subgroup' ? Description: This mineral is unknown from Connecticut trap rock. Likely confusion with chabazite variety phacolite. |
| ⓘ Goethite Formula: Fe3+O(OH) Habit: botryoidal, fibrous Colour: dark brown Description: As tiny crystals and aggregates sprinkled on other minerals in mineralized fractures. References: |
| ⓘ Gypsum Formula: CaSO4 · 2H2O References: |
| ⓘ Gypsum var. Selenite Formula: CaSO4 · 2H2O References: |
| ⓘ Hematite Formula: Fe2O3 Habit: botryoidal Colour: maroon Description: As tiny flakes or hemispheres, commonly crystallized preferentially along the edges of scalenohedral calcite crystals and on and within their terminal areas. References: |
| ⓘ Kyanite Formula: Al2(SiO4)O References: |
| ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O Colour: flesh to pink Description: "flesh-colored to pink laumontite were found. These crystals, occurring in vugs and on a few surfaces, are splintery and of matchstick size. Some vein material was also present. The largest specimen, 10 by 6 inches in size, contains excellent vug material associated with prehnite as well as veins of laumontite." Brunet (1980) |
| ⓘ 'Limonite' Habit: massive |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Localities: Habit: Octahedral-dodecahedral Description: Found in small pegmatite pods around the major pegmatite bodies. |
| ⓘ Meta-autunite Formula: Ca(UO2)2(PO4)2 · 6H2O References: |
| ⓘ Microcline Formula: K(AlSi3O8) Habit: subhedral near quartz segregations. Colour: white Description: Part of the pegmatite matrix. References: |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Opal Formula: SiO2 · nH2O Localities: Fluorescence: green |
| ⓘ Opal var. Opal-AN Formula: SiO2 · nH2O |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ 'Pumpellyite Subgroup' ? Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A Colour: green Description: Described by Yedlin (1962) as "fine green mounds of clinochlore", but most likely actually pumpellyite given its prevalence at other basalt quarries in the area. |
| ⓘ Pyrite Formula: FeS2 Habit: cubic Description: Micro crystals. References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Amethyst Formula: SiO2 |
| ⓘ Quartz var. Blue Quartz Formula: SiO2 References: |
| ⓘ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) Localities: Description: Small crystals in the contact zone of the pegmatite and the country rock. Some schorls in the quartz core can be quite large (~10cm) and terminated |
| ⓘ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O Habit: square edges lathlike |
| ⓘ Stilpnomelane Formula: K4Fe2+48[Si64Al8]O164(OH)52 · nH2O Habit: botryoidal aggregates Colour: bronze Description: As tiny botryoidal aggregates on other minerals in fractures. References: |
| ⓘ Titanite Formula: CaTiO(SiO4) References: |
| ⓘ 'Tourmaline' Formula: AD3G6(T6O18)(BO3)3X3Z Description: This material may be schorl based on the high Fe content of these pegmatites. References: |
| ⓘ Uraninite Formula: UO2 |
| ⓘ Uranophane Formula: Ca(UO2)2(SiO3OH)2 · 5H2O References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | var. Blue Quartz | 4.DA.05 | SiO2 |
| ⓘ | Opal var. Opal-AN | 4.DA.10 | SiO2 · nH2O |
| ⓘ | 4.DA.10 | SiO2 · nH2O | |
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anhydrite ? | 7.AD.30 | CaSO4 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| ⓘ | var. Selenite | 7.CD.40 | CaSO4 · 2H2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| ⓘ | Autunite | 8.EB.05 | Ca(UO2)2(PO4)2 · 10-12H2O |
| ⓘ | Meta-autunite | 8.EB.10 | Ca(UO2)2(PO4)2 · 6H2O |
| Group 9 - Silicates | |||
| ⓘ | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| ⓘ | Kyanite | 9.AF.15 | Al2(SiO4)O |
| ⓘ | Titanite | 9.AG.15 | CaTiO(SiO4) |
| ⓘ | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| ⓘ | Uranophane | 9.AK.15 | Ca(UO2)2(SiO3OH)2 · 5H2O |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Babingtonite | 9.DK.05 | Ca2Fe2+Fe3+Si5O14(OH) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Fluorapophyllite-(K) | 9.EA.15 | KCa4(Si8O20)(F,OH) · 8H2O |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Stilpnomelane | 9.EG.40 | K4Fe2+48[Si64Al8]O164(OH)52 · nH2O |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
| ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
| Unclassified | |||
| ⓘ | 'Apophyllite Group' | - | AB4[Si8O20]X · 8H2O |
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Chabazite' | - | |
| ⓘ | 'Gmelinite Subgroup' ? | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Pumpellyite Subgroup' ? | - | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
| ⓘ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Columbite-Tantalite' | - | |
| ⓘ | 'Chabazite var. Phacolite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| H | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| H | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Datolite | CaB(SiO4)(OH) |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| H | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Opal | SiO2 · nH2O |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| H | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| H | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| H | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| H | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Be | Beryllium | |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| B | Boron | |
| B | ⓘ Datolite | CaB(SiO4)(OH) |
| B | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| C | Carbon | |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Quartz var. Amethyst | SiO2 |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Anhydrite | CaSO4 |
| O | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| O | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| O | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Datolite | CaB(SiO4)(OH) |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Fluorapatite | Ca5(PO4)3F |
| O | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| O | ⓘ Kyanite | Al2(SiO4)O |
| O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| O | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| O | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| O | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| O | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Quartz var. Blue Quartz | SiO2 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Fluorapatite | Ca5(PO4)3F |
| F | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| F | ⓘ Fluorite | CaF2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Na | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Mg | Magnesium | |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Kyanite | Al2(SiO4)O |
| Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Al | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Al | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Quartz var. Amethyst | SiO2 |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Si | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Datolite | CaB(SiO4)(OH) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| Si | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| Si | ⓘ Kyanite | Al2(SiO4)O |
| Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Si | ⓘ Titanite | CaTiO(SiO4) |
| Si | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | ⓘ Quartz var. Blue Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| P | ⓘ Fluorapatite | Ca5(PO4)3F |
| P | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| S | Sulfur | |
| S | ⓘ Anhydrite | CaSO4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| K | ⓘ Microcline | K(AlSi3O8) |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Ca | Calcium | |
| Ca | ⓘ Anhydrite | CaSO4 |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| Ca | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Datolite | CaB(SiO4)(OH) |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Fluorapatite | Ca5(PO4)3F |
| Ca | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Ca | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | ⓘ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Ca | ⓘ Titanite | CaTiO(SiO4) |
| Ca | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Ca | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Titanite | CaTiO(SiO4) |
| Mn | Manganese | |
| Mn | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Fe | Iron | |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Fe | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Fe | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Nb | Niobium | |
| Nb | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| U | Uranium | |
| U | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| U | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Fossils
This region is too big or complex to display the fossil list, try looking at smaller subregions.Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Durham,_Connecticut |
|---|---|
| Wikidata ID: | Q753859 |
| GeoNames ID: | 4833139 |
Localities in this Region
- Connecticut
Other Regions, Features and Areas that Intersect
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
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References
Reed's Gap Quarry, Durham, Middlesex County, Connecticut, USA