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Forest Ridge Road, Higganum, Haddam, Middlesex County, Connecticut, USAi
Regional Level Types
Forest Ridge RoadRoad
Higganum- not defined -
Haddam- not defined -
Middlesex CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 29' 28'' North , 72° 32' 28'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
264352
Long-form identifier:
mindat:1:2:264352:9
GUID (UUID V4):
2e1810c3-601a-459b-9af2-5c18f51ca523


Road cuts for residential development exposed small common pegmatites and the host rock Ordovician Pond Meadow Gneiss. Besides the rock-forming pegmatite minerals are highly fluorescent coatings of opal-AN.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
Habit: anhedral
Colour: white
β“˜ Almandine
Formula: Fe2+3Al2(SiO4)3
Habit: trapezohedral to anhedral grains
Colour: maroon
Description: tiny accessory grains
β“˜ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Description: tiny accessory flakes
β“˜ Hematite
Formula: Fe2O3
Habit: stains
Description: stains probably from the oxidation of magnetite
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Habit: striated octahedrons
Colour: metallic gray-black
Description: mostly small accessory grains
β“˜ Microcline
Formula: K(AlSi3O8)
Habit: anhedral
Colour: pink
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: micaceous accessory in small grains
βœͺ Opal
Formula: SiO2 · nH2O
Habit: encrustations
Colour: colorless
Fluorescence: bright green
Description: Gelatinous coatings and encrustations, some easily visible without using a UV lamp, on both pegmatite and host gneiss. UV response best in SW, progressively less in MW to LW.
βœͺ Opal var. Opal-AN
Formula: SiO2 · nH2O
Habit: encrustations
Colour: colorless
Fluorescence: bright green
Description: Gelatinous coatings and encrustations, some easily visible without using a UV lamp, on both pegmatite and host gneiss. UV response best in SW, progressively less in MW to LW.
β“˜ Quartz
Formula: SiO2
Habit: masive
Colour: black
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
Habit: masive
Colour: black

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜var. Smoky Quartz4.DA.05SiO2
β“˜Opal
var. Opal-AN
4.DA.10SiO2 Β· nH2O
β“˜4.DA.10SiO2 Β· nH2O
Group 9 - Silicates
β“˜Almandine9.AD.25Fe2+3Al2(SiO4)3
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)

List of minerals for each chemical element

HHydrogen
Hβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Hβ“˜ Opal var. Opal-ANSiO2 · nH2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ OpalSiO2 · nH2O
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Oβ“˜ AlmandineFe32+Al2(SiO4)3
Oβ“˜ HematiteFe2O3
Oβ“˜ Opal var. Opal-ANSiO2 · nH2O
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ OpalSiO2 · nH2O
Oβ“˜ QuartzSiO2
Oβ“˜ Quartz var. Smoky QuartzSiO2
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Alβ“˜ AlmandineFe32+Al2(SiO4)3
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Siβ“˜ AlmandineFe32+Al2(SiO4)3
Siβ“˜ Opal var. Opal-ANSiO2 · nH2O
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OpalSiO2 · nH2O
Siβ“˜ QuartzSiO2
Siβ“˜ Quartz var. Smoky QuartzSiO2
KPotassium
Kβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
FeIron
Feβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Feβ“˜ AlmandineFe32+Al2(SiO4)3
Feβ“˜ HematiteFe2O3
Feβ“˜ MagnetiteFe2+Fe23+O4

Other Regions, Features and Areas containing this locality


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References

 
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