Danbury, Fairfield County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Danbury | Municipality |
| Fairfield County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 23' 47'' North , 73° 27' 15'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
3700
Long-form identifier:
mindat:1:2:3700:9
GUID (UUID V4):
2b41e6e0-aa62-49ef-a215-bd031330a8e2
A city first incorporated as a town in 1702. Most famous mineralogically for the danburite type locality (see http://www.mindat.org/loc-243666.html).
Its bedrock geology is very complex because the city lies over a folded section of Cameron's Line, a major thrust fault separating Ordovician Ratlum Mountain schist of oceanic origin (and intruded Brookfield diorite gneiss) under Shelter Rock from metamorphosed continental shelf deposits (marble, quartzite, gneiss) overlying Lauretian basement under most of the city. The Cambrian Stockbridge marble underlies low lying areas NE and SE of Shelter Rock, and under Mill Plain to the west. The Still River and Limekiln Brook generally follow these lowlands. The highlands occupying most of the north and southwest parts of the city are underlain by very resistant rocks of the Cambrian Dalton formation and the Proterozoic Laurentian gneisses, which in the southwest have been cut up by probable Mesozoic normal faulting.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities52 valid minerals. 1 (TL) - type locality of valid minerals. 3 erroneous literature entries.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Rock list contains entries from the region specified including sub-localities
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Alphabetical List Tree DiagramDetailed Mineral List:
| β Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Habit: elongated prisms Colour: dark green Description: Massive to subhedral elongated crystals in calc-silicate rocks |
| β Albite Formula: Na(AlSi3O8) Localities: Danbury, Fairfield County, Connecticut, USA Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA Interstate 84 and US Route 202 interchange, Danbury, Fairfield County, Connecticut, USA North Street mall, Danbury, Fairfield County, Connecticut, USA Danburite type locality, Danbury, Fairfield County, Connecticut, USA |
| β Albite var. Oligoclase Formula: (Na,Ca)[Al(Si,Al)Si2O8] Habit: granular, massive to subhedral Colour: white to pale bluish-white Fluorescence: pale yellow-white Description: In dolomite and intimately associated with a K-spar and rarely danburite. Specimens preserved at Yale Peabody Museum range from coarse-granular to elongated subhedral (to a few cms), are white, opaque to translucent, with abundant polysynthetic twinning and adamantine luster on the abundant cleavage. Rather dull fluorescence under LW UV, pale yellow-white. |
| β 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) Localities: Description: "reported in and around the immediate Danbury area. Occurring in granite containing a good deal of pink feldspar, some crystals measured one inch in length and one quarter of an inch in diameter. The specimens collected and seen have not been too radioactive. Radial cracking and the red staining of the feldspar around the allanite is typical." Januzzi (1959). |
| β Almandine Formula: Fe2+3Al2(SiO4)3 Localities: |
| β 'Amphibole Supergroup' Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 Localities: |
| β 'Amphibole Supergroup var. Uralite' ? Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 Description: Included in a list of minerals with no details. |
| β Antigorite Formula: Mg3(Si2O5)(OH)4 |
| β Aragonite Formula: CaCO3 Localities: Description: "commonly reported" Ryerson (1972). |
| β Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Localities: Description: Part of the assemblage quartz, feldspar, pyroxene, amphibole, sphene, zircon and biotite. |
| β Baryte Formula: BaSO4 Localities: Description: Included in lists of minerals found, but with no details. References: |
| β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 Localities: Danbury, Fairfield County, Connecticut, USA Western Connecticut State College, Danbury, Fairfield County, Connecticut, USA Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA North Street mall, Danbury, Fairfield County, Connecticut, USA Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA ? (more information) |
| β 'Brewsterite Subgroup' ? Localities: Description: "as microscopic monoclinic crystals, and as white fibers in a cavity in pyroxene...verified by x-ray diffraction analysis" Pawloski (1965). But questioned by Tschernich (1992). |
| β Calcite Formula: CaCO3 Localities: Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA Shelter Rock Road/Plumtrees Road intersection, Danbury, Fairfield County, Connecticut, USA Western Connecticut State College, Danbury, Fairfield County, Connecticut, USA North Street mall, Danbury, Fairfield County, Connecticut, USA Habit: scalenohedral Colour: white to pale yellow Description: "The most well-known locality for large, well-formed calcite crystals occurs in the Beaverbrook District of Danbury, Connecticut." Januzzi (1959). Based on more specific references to other minerals, this statement refers to the Agstone Co. Quarry near the border with Brookfield. He also reports in 1959: "Collecting is not allowed but collection of minerals from this locality, including many fine calcite crystals may be seen at the office." Januzzi (1994) includes a photo of a a doubly-terminated, scalenohedral crystal dusted with tiny pyrites. |
| β Celestine Formula: SrSO4 Colour: pale blue Description: Included in lists of minerals without details, but Januzzi (1994) includes a photograph. |
| β 'Chabazite' ? Description: Included in a list of minerals with no details provided. |
| β Chalcopyrite Formula: CuFeS2 Localities: Description: "Chalcopyrite has also been found at the limestone quarry in the Beaverbrook District." Januzzi (1959). |
| β 'Chlorite Group' Localities: |
| β Chondrodite Formula: Mg5(SiO4)2F2 Habit: anhedral to subhedral Colour: reddish-orange Description: "It occurs as anhedral to subhedral crystals and crystal aggregates, whose individual grains range from microscopic to macroscopic in size. I am most impressed, however, by the color of the chondrodite which is often a beautiful reddish-orange on freshly exposed surfaces of the limestone." Januzzi (1976). |
| β Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 Description: Included in a lists of minerals without details, but plausible for the formation. |
| β 'Columbite-(Fe)-Columbite-(Mn) Series' Habit: blocky, subhedral Colour: black Description: Januzzi (1994) includes a photo of small crystals in massive quartz, apparently from one of the small cross-cutting pegmatites. |
| β Danburite (TL) Formula: CaB2Si2O8 Localities: Type Locality: Danbury, Fairfield County, Connecticut, USA |
| β Datolite Formula: CaB(SiO4)(OH) Habit: fine granular crystal aggregates Colour: whitish Description: "as fine granular crystal aggregates having whitish color in mass, many of them being transparent under the microscope. Associated minerals include: calcite, pyroxene, amphibole, and sphene." Januzzi (1976). Januzzi (1994) includes a photograph. |
| β Diopside Formula: CaMgSi2O6 Localities: Description: Included in a lists of minerals without details, but plausible for the formation. |
| β Dolomite Formula: CaMg(CO3)2 Localities: Description: Host rock for the assemblage, but no descriptions provided. Fine granular material on one specimen at Yale Peabody collection. |
| β Dumortierite ? Formula: Al(Al2O)(Al2O)2(SiO4)3(BO3) Habit: acicular Colour: bright blue Description: A few concentrations of tiny acicular crystals in one specimen of coarse-grained albite/quartz/biotite gneiss matrix. |
| β Epidote ? Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Description: Included in a list of minerals with no details. |
| β Epistilbite ? Formula: CaAl2Si6O16 · 5H2O Description: "as microscopic monoclinic crystals, and as white fibers in a cavity in pyroxene...verified by x-ray diffraction analysis" Pawloski (1965). But questioned by Tschernich (1992). |
| β 'Fayalite-Forsterite Series' |
| β 'Feldspar Group' |
| β Fluorapatite Formula: Ca5(PO4)3F Localities: |
| β Fluorite ? Formula: CaF2 Description: Included in a list of minerals with no details. |
| β Forsterite Formula: Mg2SiO4 Localities: |
| β 'Garnet Group' Formula: X3Z2(SiO4)3 Localities: |
| β Goethite ? Formula: Ξ±-Fe3+O(OH) Description: Included in a list of minerals with no details. |
| β Graphite Formula: C Localities: Description: "found about one mile northwest of Danbury on the road to New Fairfield", Schairer (1931). References: |
| β Gypsum Formula: CaSO4 · 2H2O Habit: micro plumose aggregates Colour: colorless but typically stained yellow Description: Micro secondary crystals from the reaction of pyrite, calcite and water and "found as seams in limestone associated with calcite at the limestone quarry, Beaver Brook District, Danbury" Januzzi (1959). Schooner (1961) reports seeing a good example. |
| β Gypsum var. Selenite Formula: CaSO4 · 2H2O Habit: micro plumose aggregates Colour: colorless but typically stained yellow Description: Micro secondary crystals from the reaction of pyrite, calcite and water and "found as seams in limestone associated with calcite at the limestone quarry, Beaver Brook District, Danbury" Januzzi (1959). Schooner (1961) reports seeing a good example. |
| β Hematite Formula: Fe2O3 Localities: |
| β 'Heulandite Subgroup' ? Description: Included in a list of minerals with no details. |
| β 'Hornblende' Localities: |
| β Ilmenite Formula: Fe2+TiO3 Localities: |
| β 'K Feldspar' References: |
| β 'K Feldspar var. Adularia' Formula: KAlSi3O8 Description: 1 cm crystals in a cleft with chlorite. References: |
| β Laumontite ? Formula: CaAl2Si4O12 · 4H2O Description: Included in a list of minerals with no details. |
| β 'Limonite' Localities: Description: Ubiquitous in Connecticut. |
| β Magnetite Formula: Fe2+Fe3+2O4 Localities: |
| β Microcline Formula: K(AlSi3O8) Localities: Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA North Street mall, Danbury, Fairfield County, Connecticut, USA Western Connecticut State College, Danbury, Fairfield County, Connecticut, USA Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA Danburite type locality, Danbury, Fairfield County, Connecticut, USA Description: Included in lists of minerals without details, but plausible in small pegmatites. |
| β Molybdenite Formula: MoS2 Habit: massive aggregates to a few cm Colour: metallic silvery gray Description: Small masses in albite or fine-grained secondary calcite with pyrite, found by Charles and Marcelle Weber. |
| β 'Moonstone' |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 Localities: Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA Western Connecticut State College, Danbury, Fairfield County, Connecticut, USA Interstate 84 and US Route 202 interchange, Danbury, Fairfield County, Connecticut, USA North Street mall, Danbury, Fairfield County, Connecticut, USA ? (more information) |
| β Opal Formula: SiO2 · nH2O Localities: References: |
| β Opal var. Opal-AN Formula: SiO2 · nH2O Localities: |
| β Orthoclase Formula: K(AlSi3O8) Localities: |
| β Formula: (Mg,Al)2Si4O10(OH) · 4H2O Locality: Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA - erroneously reported Description: TEM-EDS analysis showed a sample to be sepiolite. |
| β Phlogopite Formula: KMg3(AlSi3O10)(OH)2 Localities: Description: Included in lists of minerals without details, but plausible for the formation - a common accessory in marble. |
| β 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| β Powellite Formula: Ca(MoO4) Fluorescence: pale yellow under SW Description: Alteration of molybdenite, only easily seen under SW UV light. |
| β Prehnite ? Formula: Ca2Al2Si3O10(OH)2 Description: Included in a list of minerals with no details. |
| β Pyrite Formula: FeS2 Localities: Reported from at least 6 localities in this region. |
| β 'Pyroxene Group' Formula: ADSi2O6 Localities: |
| β Pyrrhotite Formula: Fe1-xS Localities: Description: Included in a list of minerals without details, but plausible for the formation. |
| β Quartz Formula: SiO2 Localities: Reported from at least 7 localities in this region. |
| β Formula: (UO2)CO3 Locality: North Street mall, Danbury, Fairfield County, Connecticut, USA - erroneously reported Description: Speculation. |
| β Rutile Formula: TiO2 |
| β 'Scapolite' Localities: Habit: massive to prismatic Colour: white, pink to violet, light gray Fluorescence: yellow to salmon Description: "Hundreds of pounds of this mineral have been found here since construction began about two years ago. The greater bulk of the scapolite is massive with most of the typical prismatic crystals restricted to cavities in the massive material or to open spaces or seams between rock masses. The color of the scapolite is predominantly white with occasional patches of pink or violet. The scapolite is fluorescent to a degree showing at times a fairly strong yellowish to salmon colored response among the more interesting specimens...The minerals associated with the scapolite include: amphibole, pyroxene, sphene, allanite and biotite." Januzzi (1976). |
| β Scheelite Formula: Ca(WO4) Description: "commonly reported" Ryerson (1972). |
| β Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| βͺ Sepiolite Formula: Mg4(Si6O15)(OH)2 · 6H2O Habit: fibrous mats Colour: white to pale gray-brown Description: Found as a thin layer sandwiched between opposing calcite crystals. Analyzed in 2017 via TEM-EDS. Januzzi (1994) incorrectly called it palygorskite and includes a photo. |
| β 'Serpentine Subgroup' ? Formula: D3[Si2O5](OH)4 Description: Included in a list of minerals with no details. |
| β Sillimanite Formula: Al2(SiO4)O |
| β Sphalerite Formula: ZnS Habit: anhedral Colour: gray-brown Description: mass of translucent anhedral grains 11 mm across in marble with phlogopite and chondrodite |
| β Spinel Formula: MgAl2O4 Habit: subhedral octahedral to euhedral Colour: greenish-black, blue-gray Description: "It occurs here as greenish-black subhedral to euhedral crystals in limestone associated with chondrodite and perhaps what may be forsterite. The spinel ranges in size from tiny grain-like crystals to those that on occasion exceed the size of a pea." Januzzi (1976). |
| β 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O Localities: Description: "reported on the Sugar Hollow Road outside of Danbury going south on Route 7" Januzzi (1959) |
| β Talc Formula: Mg3Si4O10(OH)2 Localities: |
| β Thorite Formula: Th(SiO4) Localities: Habit: anhedral grains Colour: dark brown to brownish black Description: "as anhedral (without external faces) grains and small masses having a dark brown to brownish black color and vitreous to resinous luster. Because of the anhedral nature of the material I should strongly suspect the thorite to be of the uranothorite variety. The samples sent to Dr. Brian Mason for confirmation clearly demonstrated that they were almost metamict, with a refractive index of about 1.78, and gave good X-ray patterns of thorite after heating for about two hours at 1100 degrees. The thorite occurs here intimately associated with quartz, feldspar, pyroxene, amphibole, sphene, zircon and biotite. Regular and irregular distribution of color areas ranging from orange to yellow material of varying luster occurs in many of the hand specimens containing apparently unaltered thorite." Januzzi (1976). Januzzi (1994) includes a photo. Thorite grains, in coarse-grained albite with minor zircon, reach about 1 cm. References: |
| β Formula: (Th,Ca2)SiO4 · 3.5H2O Locality: North Street mall, Danbury, Fairfield County, Connecticut, USA - erroneously reported Description: Speculation. |
| β Thorite var. Thorogummite Formula: (Th,U)(SiO4)1-x(OH)4x Habit: psuedomorphs after thorite Colour: yellowish Description: "as small yellowish pulverulent masses having a dull luster, to material of a more compact nature with a waxy luster; it is evidently pseudomorphous after crystals of thorite." Januzzi (1976) |
| β Titanite Formula: CaTi(SiO4)O Localities: Reported from at least 6 localities in this region. Description: "in isolated rock masses at Mill Ridge, Danbury" Januzzi (1959) |
| β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z Localities: |
| β Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 Localities: Description: A common accessory in marble. |
| β Zircon Formula: Zr(SiO4) Localities: Habit: prismatic bi-pyramidal Colour: brown Description: "An outstanding isolated occurrence of zircon crystals was discovered by John and Robert Gruss in a granite matrix at Mill Ridge, west of Danbury. The crystals were opaque, brown prismatic bi-pyramidal contact twins over an inch in length." Januzzi (1959). |
| β Zircon var. Cyrtolite ? Formula: Zr[(SiO4),(OH)4] Description: Included in a list of minerals without details. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Molybdenite | 2.EA.30 | MoS2 |
| β | Pyrite | 2.EB.05a | FeS2 |
| β | Pyrrhotite | 2.CC.10 | Fe1-xS |
| β | Sphalerite | 2.CB.05a | ZnS |
| Group 3 - Halides | |||
| β | Fluorite ? | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Goethite ? | 4.00. | Ξ±-Fe3+O(OH) |
| β | Hematite | 4.CB.05 | Fe2O3 |
| β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| β | Opal | 4.DA.10 | SiO2 Β· nH2O |
| β | var. Opal-AN | 4.DA.10 | SiO2 Β· nH2O |
| β | Quartz | 4.DA.05 | SiO2 |
| β | Rutile | 4.DB.05 | TiO2 |
| β | Spinel | 4.BB.05 | MgAl2O4 |
| Group 5 - Nitrates and Carbonates | |||
| β | Aragonite | 5.AB.15 | CaCO3 |
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| β | Rutherfordine ? | 5.EB.05 | (UO2)CO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Baryte | 7.AD.35 | BaSO4 |
| β | Celestine | 7.AD.35 | SrSO4 |
| β | Gypsum | 7.CD.40 | CaSO4 Β· 2H2O |
| β | var. Selenite | 7.CD.40 | CaSO4 Β· 2H2O |
| β | Powellite | 7.GA.05 | Ca(MoO4) |
| β | Scheelite | 7.GA.05 | Ca(WO4) |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| Group 9 - Silicates | |||
| β | Actinolite | 9.DE.10 | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| β | Albite | 9.FA.35 | Na(AlSi3O8) |
| β | var. Oligoclase | 9.FA.35 | (Na,Ca)[Al(Si,Al)Si2O8] |
| β | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| β | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| β | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| β | Chondrodite | 9.AF.45 | Mg5(SiO4)2F2 |
| β | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| β | Danburite (TL) | 9.FA.65 | CaB2Si2O8 |
| β | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| β | Diopside | 9.DA.15 | CaMgSi2O6 |
| β | Dumortierite ? | 9.AJ.10 | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| β | Epidote ? | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| β | Epistilbite ? | 9.GD.45 | CaAl2Si6O16 Β· 5H2O |
| β | Forsterite | 9.AC.05 | Mg2SiO4 |
| β | Laumontite ? | 9.GB.10 | CaAl2Si4O12 Β· 4H2O |
| β | Microcline | 9.FA.30 | K(AlSi3O8) |
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | Orthoclase | 9.FA.30 | K(AlSi3O8) |
| β | Palygorskite ? | 9.EE.20 | (Mg,Al)2Si4O10(OH) Β· 4H2O |
| β | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| β | Prehnite ? | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| β | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| β | Sepiolite | 9.EE.25 | Mg4(Si6O15)(OH)2 Β· 6H2O |
| β | Sillimanite | 9.AF.05 | Al2(SiO4)O |
| β | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| β | Thorite | 9.AD.30 | Th(SiO4) |
| β | var. Calciothorite ? | 9.AD.30 | (Th,Ca2)SiO4 Β· 3.5H2O |
| β | var. Thorogummite | 9.AD.30 | (Th,U)(SiO4)1-x(OH)4x |
| β | Titanite | 9.AG.15 | CaTi(SiO4)O |
| β | Tremolite | 9.DE.10 | β»Ca2Mg5(Si8O22)(OH)2 |
| β | Zircon | 9.AD.30 | Zr(SiO4) |
| β | var. Cyrtolite ? | 9.AD.30 | Zr[(SiO4),(OH)4] |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| β | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| β | 'var. Uralite' ? | - | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| β | 'Brewsterite Subgroup' ? | - | |
| β | 'Chabazite' ? | - | |
| β | 'Chlorite Group' | - | |
| β | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| β | 'Fayalite-Forsterite Series' | - | |
| β | 'Feldspar Group' | - | |
| β | 'Garnet Group' | - | X3Z2(SiO4)3 |
| β | 'Heulandite Subgroup' ? | - | |
| β | 'Hornblende' | - | |
| β | 'K Feldspar' | - | |
| β | 'var. Adularia' | - | KAlSi3O8 |
| β | 'Limonite' | - | |
| β | 'Moonstone' | - | |
| β | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| β | 'Pyroxene Group' | - | ADSi2O6 |
| β | 'Scapolite' | - | |
| β | 'Serpentine Subgroup' ? | - | D3[Si2O5](OH)4 |
| β | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] Β· nH2O |
| β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
| H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | β Talc | Mg3Si4O10(OH)2 |
| H | β Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| H | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| H | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | β Opal | SiO2 · nH2O |
| H | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | β Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| H | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| H | β Opal var. Opal-AN | SiO2 · nH2O |
| H | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | β Antigorite | Mg3(Si2O5)(OH)4 |
| H | β Gypsum var. Selenite | CaSO4 · 2H2O |
| H | β Datolite | CaB(SiO4)(OH) |
| H | β Gypsum | CaSO4 · 2H2O |
| H | β Epistilbite | CaAl2Si6O16 · 5H2O |
| H | β Goethite | Ξ±-Fe3+O(OH) |
| H | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | β Laumontite | CaAl2Si4O12 · 4H2O |
| H | β Prehnite | Ca2Al2Si3O10(OH)2 |
| H | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| H | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| H | β Palygorskite | (Mg,Al)2Si4O10(OH) · 4H2O |
| H | β Thorite var. Calciothorite | (Th,Ca2)SiO4 · 3.5H2O |
| B | Boron | |
| B | β Danburite | CaB2Si2O8 |
| B | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| B | β Datolite | CaB(SiO4)(OH) |
| B | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| C | Carbon | |
| C | β Calcite | CaCO3 |
| C | β Graphite | C |
| C | β Aragonite | CaCO3 |
| C | β Dolomite | CaMg(CO3)2 |
| C | β Rutherfordine | (UO2)CO3 |
| O | Oxygen | |
| O | β Danburite | CaB2Si2O8 |
| O | β Zircon | Zr(SiO4) |
| O | β Calcite | CaCO3 |
| O | β Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
| O | β Albite | Na(AlSi3O8) |
| O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | β Forsterite | Mg2SiO4 |
| O | β Garnet Group | X3Z2(SiO4)3 |
| O | β Orthoclase | K(AlSi3O8) |
| O | β Rutile | TiO2 |
| O | β Quartz | SiO2 |
| O | β Talc | Mg3Si4O10(OH)2 |
| O | β Ilmenite | Fe2+TiO3 |
| O | β Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| O | β Titanite | CaTi(SiO4)O |
| O | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| O | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | β Aragonite | CaCO3 |
| O | β Baryte | BaSO4 |
| O | β Microcline | K(AlSi3O8) |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | β Diopside | CaMgSi2O6 |
| O | β Scheelite | Ca(WO4) |
| O | β Pyroxene Group | ADSi2O6 |
| O | β Chondrodite | Mg5(SiO4)2F2 |
| O | β Thorite | Th(SiO4) |
| O | β Almandine | Fe32+Al2(SiO4)3 |
| O | β Opal | SiO2 · nH2O |
| O | β Dolomite | CaMg(CO3)2 |
| O | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | β Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| O | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | β Fluorapatite | Ca5(PO4)3F |
| O | β Hematite | Fe2O3 |
| O | β Magnetite | Fe2+Fe23+O4 |
| O | β Opal var. Opal-AN | SiO2 · nH2O |
| O | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | β Sillimanite | Al2(SiO4)O |
| O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | β Antigorite | Mg3(Si2O5)(OH)4 |
| O | β Celestine | SrSO4 |
| O | β Gypsum var. Selenite | CaSO4 · 2H2O |
| O | β Spinel | MgAl2O4 |
| O | β Datolite | CaB(SiO4)(OH) |
| O | β Gypsum | CaSO4 · 2H2O |
| O | β Powellite | Ca(MoO4) |
| O | β K Feldspar var. Adularia | KAlSi3O8 |
| O | β Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| O | β Epistilbite | CaAl2Si6O16 · 5H2O |
| O | β Goethite | Ξ±-Fe3+O(OH) |
| O | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | β Laumontite | CaAl2Si4O12 · 4H2O |
| O | β Prehnite | Ca2Al2Si3O10(OH)2 |
| O | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| O | β Palygorskite | (Mg,Al)2Si4O10(OH) · 4H2O |
| O | β Rutherfordine | (UO2)CO3 |
| O | β Thorite var. Calciothorite | (Th,Ca2)SiO4 · 3.5H2O |
| F | Fluorine | |
| F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | β Chondrodite | Mg5(SiO4)2F2 |
| F | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| F | β Fluorapatite | Ca5(PO4)3F |
| F | β Fluorite | CaF2 |
| F | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Na | Sodium | |
| Na | β Albite | Na(AlSi3O8) |
| Na | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | β Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Mg | Magnesium | |
| Mg | β Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
| Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | β Forsterite | Mg2SiO4 |
| Mg | β Talc | Mg3Si4O10(OH)2 |
| Mg | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | β Diopside | CaMgSi2O6 |
| Mg | β Chondrodite | Mg5(SiO4)2F2 |
| Mg | β Dolomite | CaMg(CO3)2 |
| Mg | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Mg | β Antigorite | Mg3(Si2O5)(OH)4 |
| Mg | β Spinel | MgAl2O4 |
| Mg | β Palygorskite | (Mg,Al)2Si4O10(OH) · 4H2O |
| Al | Aluminium | |
| Al | β Albite | Na(AlSi3O8) |
| Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | β Orthoclase | K(AlSi3O8) |
| Al | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Al | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | β Microcline | K(AlSi3O8) |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | β Almandine | Fe32+Al2(SiO4)3 |
| Al | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | β Sillimanite | Al2(SiO4)O |
| Al | β Spinel | MgAl2O4 |
| Al | β K Feldspar var. Adularia | KAlSi3O8 |
| Al | β Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Al | β Epistilbite | CaAl2Si6O16 · 5H2O |
| Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | β Laumontite | CaAl2Si4O12 · 4H2O |
| Al | β Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| Al | β Palygorskite | (Mg,Al)2Si4O10(OH) · 4H2O |
| Si | Silicon | |
| Si | β Danburite | CaB2Si2O8 |
| Si | β Zircon | Zr(SiO4) |
| Si | β Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
| Si | β Albite | Na(AlSi3O8) |
| Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | β Forsterite | Mg2SiO4 |
| Si | β Garnet Group | X3Z2(SiO4)3 |
| Si | β Orthoclase | K(AlSi3O8) |
| Si | β Quartz | SiO2 |
| Si | β Talc | Mg3Si4O10(OH)2 |
| Si | β Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Si | β Titanite | CaTi(SiO4)O |
| Si | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | β Microcline | K(AlSi3O8) |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | β Diopside | CaMgSi2O6 |
| Si | β Pyroxene Group | ADSi2O6 |
| Si | β Chondrodite | Mg5(SiO4)2F2 |
| Si | β Thorite | Th(SiO4) |
| Si | β Almandine | Fe32+Al2(SiO4)3 |
| Si | β Opal | SiO2 · nH2O |
| Si | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | β Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| Si | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | β Opal var. Opal-AN | SiO2 · nH2O |
| Si | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | β Sillimanite | Al2(SiO4)O |
| Si | β Antigorite | Mg3(Si2O5)(OH)4 |
| Si | β Datolite | CaB(SiO4)(OH) |
| Si | β K Feldspar var. Adularia | KAlSi3O8 |
| Si | β Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | β Epistilbite | CaAl2Si6O16 · 5H2O |
| Si | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | β Laumontite | CaAl2Si4O12 · 4H2O |
| Si | β Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| Si | β Palygorskite | (Mg,Al)2Si4O10(OH) · 4H2O |
| Si | β Thorite var. Calciothorite | (Th,Ca2)SiO4 · 3.5H2O |
| P | Phosphorus | |
| P | β Fluorapatite | Ca5(PO4)3F |
| S | Sulfur | |
| S | β Pyrite | FeS2 |
| S | β Chalcopyrite | CuFeS2 |
| S | β Baryte | BaSO4 |
| S | β Pyrrhotite | Fe1-xS |
| S | β Molybdenite | MoS2 |
| S | β Celestine | SrSO4 |
| S | β Gypsum var. Selenite | CaSO4 · 2H2O |
| S | β Sphalerite | ZnS |
| S | β Gypsum | CaSO4 · 2H2O |
| Cl | Chlorine | |
| Cl | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Cl | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| K | Potassium | |
| K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | β Orthoclase | K(AlSi3O8) |
| K | β Microcline | K(AlSi3O8) |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| K | β K Feldspar var. Adularia | KAlSi3O8 |
| Ca | Calcium | |
| Ca | β Danburite | CaB2Si2O8 |
| Ca | β Calcite | CaCO3 |
| Ca | β Titanite | CaTi(SiO4)O |
| Ca | β Aragonite | CaCO3 |
| Ca | β Diopside | CaMgSi2O6 |
| Ca | β Scheelite | Ca(WO4) |
| Ca | β Dolomite | CaMg(CO3)2 |
| Ca | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | β Fluorapatite | Ca5(PO4)3F |
| Ca | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | β Gypsum var. Selenite | CaSO4 · 2H2O |
| Ca | β Datolite | CaB(SiO4)(OH) |
| Ca | β Gypsum | CaSO4 · 2H2O |
| Ca | β Powellite | Ca(MoO4) |
| Ca | β Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Ca | β Epistilbite | CaAl2Si6O16 · 5H2O |
| Ca | β Fluorite | CaF2 |
| Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | β Laumontite | CaAl2Si4O12 · 4H2O |
| Ca | β Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | β Thorite var. Calciothorite | (Th,Ca2)SiO4 · 3.5H2O |
| Ti | Titanium | |
| Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | β Rutile | TiO2 |
| Ti | β Ilmenite | Fe2+TiO3 |
| Ti | β Titanite | CaTi(SiO4)O |
| Ti | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Ti | β Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Fe | Iron | |
| Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | β Pyrite | FeS2 |
| Fe | β Ilmenite | Fe2+TiO3 |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrrhotite | Fe1-xS |
| Fe | β Almandine | Fe32+Al2(SiO4)3 |
| Fe | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | β Hematite | Fe2O3 |
| Fe | β Magnetite | Fe2+Fe23+O4 |
| Fe | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | β Goethite | Ξ±-Fe3+O(OH) |
| Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | β Sphalerite | ZnS |
| Sr | Strontium | |
| Sr | β Celestine | SrSO4 |
| Zr | Zirconium | |
| Zr | β Zircon | Zr(SiO4) |
| Zr | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| Mo | Molybdenum | |
| Mo | β Molybdenite | MoS2 |
| Mo | β Powellite | Ca(MoO4) |
| Ba | Barium | |
| Ba | β Baryte | BaSO4 |
| W | Tungsten | |
| W | β Scheelite | Ca(WO4) |
| Th | Thorium | |
| Th | β Thorite | Th(SiO4) |
| Th | β Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| Th | β Thorite var. Calciothorite | (Th,Ca2)SiO4 · 3.5H2O |
| U | Uranium | |
| U | β Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| U | β Rutherfordine | (UO2)CO3 |
Localities in this Region
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Laurentides DomainDomain
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References
Danbury, Fairfield County, Connecticut, USA