Hamden, New Haven County, Connecticut, USAi
Regional Level Types | |
---|---|
Hamden | - not defined - |
New Haven County | County |
Connecticut | State |
USA | Country |
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Latitude & Longitude (WGS84):
41° 22' 60'' North , 72° 54' 7'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Hamden | 59,847 (2017) | 1.5km |
North Haven | 24,093 (2017) | 3.6km |
New Haven | 130,322 (2017) | 8.6km |
Woodbridge | 9,355 (2017) | 9.5km |
Wallingford Center | 18,209 (2017) | 10.1km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
New Haven Mineral Club | New Haven, Connecticut | 9km |
Lapidary and Mineral Society of Central Connecticut | Meriden, Connecticut | 19km |
Bristol Gem & Mineral Club | Bristol, Connecticut | 32km |
Danbury Mineralogical Society | Danbury, Connecticut | 46km |
Mindat Locality ID:
227484
Long-form identifier:
mindat:1:2:227484:6
GUID (UUID V4):
c828accd-cb6d-4c54-bc1e-db843f8074d9
Originally settled in 1638 by European immigrants as part of New Haven it incorporated as a separate town in 1786.
The bedrock geology consists mostly of the generally poorly exposed Triassic New Haven Formation, an arkosic sandstone and conglomerate in the Hartford Mesozoic Basin. Prominent ridges along the west (West Rock), south (Pine, Mill, and East Rock), and northeast (Sleeping Giant) edges of town are underlain by the Jurassic West Rock Diabase sill/dike complex. A separate narrow diabase dike, the Jurassic Buttress Dike, cuts through town intermittently NNE-SSW from West Rock Tunnel to just west of Sleeping Giant.
In the 18th and 19th centuries, a few very large pure copper nuggets were found in glacial till or attached to arkosic bedrock. The largest was found in 1870 0.5 mile north of East Rock and weighed about 200 pounds (90 kg). It is now displayed at Yale Peabody Museum in New Haven. Another one is at the Connecticut mineral and mining museum in Kent, Connecticut. A 90-pound (40 kg) one was found barely attached to bedrock in 1790 and was made into a bell for a church in New Haven.
Coordinates are for the intersection of Dixwell and Whitney Avenues at the town hall.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities14 valid minerals.
Detailed Mineral List:
ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Habit: massive in matrix, acicular to capillary in small vugs Colour: grayish-green Description: Microcrystals in small vugs in altered sandstone (perhaps derived from calcareous concretions) with epidote. |
ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 Localities: Habit: modified rhombic dodecahedrons Colour: wine yellow Description: "The Mill Rock garnets have a wine-yellow color, and a brilliant luster. The material available was much too scanty to admit of any chemical examination, but in view of their similarity of form and color, they may safely be referred to the variety topazolite." (Dana, 1877). They are a couple of mm across or less, associated with quartz. |
✪ Andradite var. Topazolite Formula: Ca3Fe3+2(SiO4)3 Habit: modified rhombic dodecahedrons Colour: wine yellow Description: "The Mill Rock garnets have a wine-yellow color, and a brilliant luster. The material available was much too scanty to admit of any chemical examination, but in view of their similarity of form and color, they may safely be referred to the variety topazolite." (Dana, 1877). They are a couple of mm across or less, associated with quartz. |
ⓘ Bornite Formula: Cu5FeS4 Localities: |
ⓘ Calcite Formula: CaCO3 Localities: Habit: scalenohedral Colour: colorless Description: micro crystals on prehnite aggregates |
ⓘ 'Chabazite' |
ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
✪ Copper Formula: Cu Habit: massive Colour: Coated with green malachite. Description: A few very large nuggets found in glacial till or attached to arkosic bedrock. The largest was found in 1870 0.5 mile north of East Rock and weighed about 200 pounds (90 kg). References: |
ⓘ Cuprite Formula: Cu2O |
ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Localities: |
ⓘ Fluorapophyllite-(K) Formula: KCa4(Si8O20)(F,OH) · 8H2O Habit: bipyramidal and prismatic combos or tabular Colour: colorless Description: Typically small (<0.5 cm) crystals on prehnite, or tabular around 1 cm. Species ID based on analyses of multiple specimens from various Connecticut localities, which are all fluorapophyllite-(K). |
ⓘ Hematite Formula: Fe2O3 Localities: References: |
ⓘ Hematite var. Specularite Formula: Fe2O3 Description: In the baked arkose below the contact with the diabase. |
ⓘ 'Heulandite Subgroup' Habit: rhombohedral Colour: colorless to fleshy red Description: small colorless and large fleshy red rhombs. |
ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O Localities: Colour: flesh Description: Massive vein material in vertical fractures. |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 Localities: References: |
ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 Localities: Habit: botryoidal aggregates Colour: pale green |
ⓘ Quartz Formula: SiO2 Localities: Colour: white Description: Druses lining cavities associated with andradite. |
ⓘ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O |
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Copper | 1.AA.05 | Cu |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Cuprite | 4.AA.10 | Cu2O |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | var. Specularite | 4.CB.05 | Fe2O3 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
Group 9 - Silicates | |||
ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
ⓘ | var. Topazolite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
ⓘ | Fluorapophyllite-(K) | 9.EA.15 | KCa4(Si8O20)(F,OH) · 8H2O |
ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Chabazite' | - | |
ⓘ | 'Heulandite Subgroup' | - | |
ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
H | ⓘ Malachite | Cu2(CO3)(OH)2 |
H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
H | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
C | Carbon | |
C | ⓘ Calcite | CaCO3 |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | ⓘ Quartz | SiO2 |
O | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | ⓘ Hematite | Fe2O3 |
O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
O | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
O | ⓘ Hematite var. Specularite | Fe2O3 |
O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
O | ⓘ Cuprite | Cu2O |
F | Fluorine | |
F | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
Mg | Magnesium | |
Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Al | Aluminium | |
Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Al | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
Si | Silicon | |
Si | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | ⓘ Quartz | SiO2 |
Si | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
Si | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
S | Sulfur | |
S | ⓘ Bornite | Cu5FeS4 |
K | Potassium | |
K | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
Ca | Calcium | |
Ca | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
Ca | ⓘ Calcite | CaCO3 |
Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
Ca | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Fe | Iron | |
Fe | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | ⓘ Hematite | Fe2O3 |
Fe | ⓘ Bornite | Cu5FeS4 |
Fe | ⓘ Hematite var. Specularite | Fe2O3 |
Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Cu | Copper | |
Cu | ⓘ Copper | Cu |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Cu | ⓘ Bornite | Cu5FeS4 |
Cu | ⓘ Cuprite | Cu2O |
Localities in this Region
- Connecticut
- New Haven County
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Ganderia DomainDomain
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Hamden, New Haven County, Connecticut, USA