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Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USAi
Regional Level Types
Riverside Quarry (Western Quarry)Quarry
White Rock Mining DistrictMining District
Middletown- not defined -
Middlesex CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 33' 28'' North , 72° 36' 12'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Portland5,862 (2017)3.5km
Middletown46,756 (2017)4.0km
Cromwell13,750 (2017)5.4km
Higganum1,698 (2017)7.8km
East Hampton2,691 (2017)8.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut17km
Bristol Gem & Mineral ClubBristol, Connecticut31km
New Haven Mineral ClubNew Haven, Connecticut39km
Mindat Locality ID:
10555
Long-form identifier:
mindat:1:2:10555:7
GUID (UUID V4):
0


A small quarry in pegmatite cut into the northwest end of the so-called Eastern Dike of the White Rock District, just above a steep bluff on the south side of River Road. It is just east of the entrance to the Kleen Energy power plant, the lowermost dump was exposed during the blasting used to create this entrance and it can be seen in the trees above the rock face. The oft-reproduced map of the Middletown Pegmatite District in Cameron et al (1954) shows it in the wrong location (much too far east) leading to incorrect directions in Schooner (1958). Stugard (1958) names it as the "Western Quarry".

It was described by Bastin (1910) as:

A small quarry...operated in 1907 by L. T. Snow, of New Haven, but work was suspended in 1908. The quarry consists of a single open pit on a northwest hill slope....Some masses of pure feldspar are 2 to 3 feet across...Both biotite [annite] and black tourmaline are present but are not abundant.


Watts (1916) stated:

The east dike is a widely varying mixture of potash feldspar pegmatite and soda feldspar pegmatite. It is much smaller in extent than the west dike and shows a structure similar to the gem bearing dikes of Maine. Much cleavelandite is scattered through this dike, and black, pink, and green tourmaline are noted, although the tourmalines are all opaque and not of the gem quality.


It may have been worked by the Consolidated Feldspar Company, which worked the White Rocks Quarry at the summit of the hill on the same pegmatite dike until around 1927 and both quarries revealed similar mineralogy and internal zoning. Collectors frequented the quarry for decades and often referred to it as the "lower White Rocks quarry" or the "quarry behind the trailers" for the mobile homes that were parked near it for a while. The quarry and dumps still exist but are inaccessible on the Kleen Energy property.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Habit: massive, anhedral
Colour: white
Albite var. Cleavelandite
Formula: Na(AlSi3O8)
Habit: platy masses
Colour: white
Almandine
Formula: Fe2+3Al2(SiO4)3
Habit: subhedral trapezohedrons
Colour: reddish purple
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Beryl
Formula: Be3Al2(Si6O18)
Habit: anhedral to subhedral hexagonal prisms
Colour: pale green, pale yellow
Description: Crystals rather crude but typically partly encrusted with fine-grained, feathery elbaite or schorl.
Beryl var. Aquamarine
Formula: Be3Al2Si6O18
Habit: subhedral hexagonal prisms
Colour: blue
Description: Not as common as other beryl varieties.
Beryl var. Morganite
Formula: Be3Al2(Si6O18)
Habit: anhedral to subhedral hexagonal prisms
Colour: pink
'Calciomicrolite'
Habit: octahedral
Colour: dark yellow-green, brown, black
Description: Usually tiny crystal <5 mm. A crystal from the White Rocks Quarry further up the same pegmatite dike was analyzed by EDS and found to be calciomicrolite.
Cassiterite
Formula: SnO2
Habit: anhedral
Colour: red-brown with iridescence
Description: Microcrystalline grains associated with cleavelandite, quartz, muscovite, calciomicrolite and elbaite.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Habit: blocky to prismatic
Colour: black with iridescence
Cookeite
Formula: (LiAl4◻)[AlSi3O10](OH)8
Habit: fine-grained, globular
Colour: pale yellow
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: acicular
Colour: green, watermellon, pale blue and pink
Description: Crystals abundant but not terminated or gemmy. Typically acicular aggregates in pegmatite matrix, penetrating muscovite books, or as fine-grained crystals coating beryl. Also as thin overgrowths on schorl.
'Feldspar Group'
'Feldspar Group var. Perthite'
Fluorapatite
Formula: Ca5(PO4)3F
Habit: subhedral prisms to skeletal
Colour: white to pale gray
Fluorescence: yellow
Fluorite
Formula: CaF2
Habit: massive
Colour: red
Fluorite var. Chlorophane
Formula: CaF2
Goethite
Formula: Fe3+O(OH)
'Lepidolite'
Habit: fine-grained granular, globular agregates
Colour: gray-pink, lavender, purple
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
Habit: massive coatings
Colour: pale yellow-green
Fluorescence: green
Description: Halos around tiny weathered uraninite grains.
Microcline
Formula: K(AlSi3O8)
Habit: anhedral
Colour: tan to white
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Habit: octahedral
Colour: yellow-green to brownish black
Description: Usually tiny crystal <5 mm. A crystal from the White Rocks Quarry further up the same pegmatite dike was analyzed by EDS and found to be calciomicrolite.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: mostly anhedral, some subhedral pseudo-hexagonal tabular crystals
Colour: silvery to golden-brown
Opal
Formula: SiO2 · nH2O
Habit: massive coatings
Colour: colorless
Fluorescence: green
Description: Usually not noticeable until a specimen is illuminated by UV light. The coatings are thin and colorless but may give a waxy appearance to the surface.
Opal var. Opal-AN
Formula: SiO2 · nH2O
Habit: massive coatings
Colour: colorless
Fluorescence: green
Description: Usually not noticeable until a specimen is illuminated by UV light. The coatings are thin and colorless but may give a waxy appearance to the surface.
Quartz
Formula: SiO2
Habit: massive, anhedral
Colour: pale gray to black
Quartz var. Rose Quartz
Formula: SiO2
Habit: massive
Colour: grayish pink to orange-pink
Quartz var. Smoky Quartz
Formula: SiO2
Habit: massive, anhedral
Colour: pale gray to black
Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: trigonal prisms with curved faces, non-terminated
Colour: black
Description: Typically coated with a thin layer of green or green and pink elbaite.
Uraninite
Formula: UO2
Habit: crude octahedrons or blebs
Colour: black
Description: Usually tiny grains, altered and surrounded by halos of secondary minerals.
Zircon
Formula: Zr(SiO4)
Habit: prisms with pyramidal terminations
Colour: brown
Description: Typically tiny grains.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite
var. Chlorophane
3.AB.25CaF2
3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Quartz4.DA.05SiO2
var. Rose Quartz4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
Opal
var. Opal-AN
4.DA.10SiO2 · nH2O
4.DA.10SiO2 · nH2O
Cassiterite4.DB.05SnO2
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Uraninite4.DL.05UO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Meta-autunite8.EB.10Ca(UO2)2(PO4)2 · 6H2O
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Beryl
var. Aquamarine
9.CJ.05Be3Al2Si6O18
9.CJ.05Be3Al2(Si6O18)
var. Morganite9.CJ.05Be3Al2(Si6O18)
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
Cookeite9.EC.55(LiAl4◻)[AlSi3O10](OH)8
Microcline9.FA.30K(AlSi3O8)
Albite9.FA.35Na(AlSi3O8)
var. Cleavelandite9.FA.35Na(AlSi3O8)
Unclassified
'Feldspar Group'-
'Lepidolite'-
'Feldspar Group
var. Perthite'
-
'Calciomicrolite'-

List of minerals for each chemical element

HHydrogen
H AnniteKFe32+(AlSi3O10)(OH)2
H Cookeite(LiAl4◻)[AlSi3O10](OH)8
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H GoethiteFe3+O(OH)
H Opal var. Opal-ANSiO2 · nH2O
H Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H OpalSiO2 · nH2O
H SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
LiLithium
Li Cookeite(LiAl4◻)[AlSi3O10](OH)8
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be Beryl var. AquamarineBe3Al2Si6O18
Be BerylBe3Al2(Si6O18)
Be Beryl var. MorganiteBe3Al2(Si6O18)
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O AlbiteNa(AlSi3O8)
O AnniteKFe32+(AlSi3O10)(OH)2
O Beryl var. AquamarineBe3Al2Si6O18
O AlmandineFe32+Al2(SiO4)3
O BerylBe3Al2(Si6O18)
O CassiteriteSnO2
O Cookeite(LiAl4◻)[AlSi3O10](OH)8
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O Columbite-(Fe)Fe2+Nb2O6
O FluorapatiteCa5(PO4)3F
O GoethiteFe3+O(OH)
O Opal var. Opal-ANSiO2 · nH2O
O Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
O MicroclineK(AlSi3O8)
O Beryl var. MorganiteBe3Al2(Si6O18)
O MuscoviteKAl2(AlSi3O10)(OH)2
O OpalSiO2 · nH2O
O QuartzSiO2
O Quartz var. Rose QuartzSiO2
O SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
O Quartz var. Smoky QuartzSiO2
O UraniniteUO2
O ZirconZr(SiO4)
O Albite var. CleavelanditeNa(AlSi3O8)
FFluorine
F Fluorite var. ChlorophaneCaF2
F FluorapatiteCa5(PO4)3F
F FluoriteCaF2
NaSodium
Na AlbiteNa(AlSi3O8)
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Na Albite var. CleavelanditeNa(AlSi3O8)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AnniteKFe32+(AlSi3O10)(OH)2
Al Beryl var. AquamarineBe3Al2Si6O18
Al AlmandineFe32+Al2(SiO4)3
Al BerylBe3Al2(Si6O18)
Al Cookeite(LiAl4◻)[AlSi3O10](OH)8
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al MicroclineK(AlSi3O8)
Al Beryl var. MorganiteBe3Al2(Si6O18)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Al Albite var. CleavelanditeNa(AlSi3O8)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si AnniteKFe32+(AlSi3O10)(OH)2
Si Beryl var. AquamarineBe3Al2Si6O18
Si AlmandineFe32+Al2(SiO4)3
Si BerylBe3Al2(Si6O18)
Si Cookeite(LiAl4◻)[AlSi3O10](OH)8
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Opal var. Opal-ANSiO2 · nH2O
Si MicroclineK(AlSi3O8)
Si Beryl var. MorganiteBe3Al2(Si6O18)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OpalSiO2 · nH2O
Si QuartzSiO2
Si Quartz var. Rose QuartzSiO2
Si SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Si Quartz var. Smoky QuartzSiO2
Si ZirconZr(SiO4)
Si Albite var. CleavelanditeNa(AlSi3O8)
PPhosphorus
P FluorapatiteCa5(PO4)3F
P Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
KPotassium
K AnniteKFe32+(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Fluorite var. ChlorophaneCaF2
Ca FluorapatiteCa5(PO4)3F
Ca FluoriteCaF2
Ca Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
FeIron
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe AlmandineFe32+Al2(SiO4)3
Fe Columbite-(Fe)Fe2+Nb2O6
Fe GoethiteFe3+O(OH)
Fe SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Columbite-(Fe)Fe2+Nb2O6
SnTin
Sn CassiteriteSnO2
TaTantalum
Ta Microlite GroupA2-mTa2X6-wZ-n
UUranium
U Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
U UraniniteUO2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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