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Clark Ledge pegmatite locality, Chesterfield, Hampshire County, Massachusetts, USAi
Regional Level Types
Clark Ledge pegmatite locality- not defined -
ChesterfieldTown
Hampshire CountyCounty
MassachusettsState
USACountry

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Latitude & Longitude (WGS84):
42° 25' 14'' North , 72° 53' 32'' West
Latitude & Longitude (decimal):
42.42057,-72.89240
GeoHash:
G#: drs1m63ms
GRN:
N29W39
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Cummington995 (2017)4.6km
Chesterfield1,222 (2017)5.4km
Goshen937 (2017)7.9km
Peru835 (2017)12.7km
Middlefield551 (2017)12.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Northern Berkshire Mineral ClubNorth Adams, Massachusetts36km
Connecticut Valley Mineral ClubSpringfield, Massachusetts43km
Mindat Locality ID:
5971
Long-form identifier:
mindat:1:2:5971:1
GUID (UUID V4):
de0b4940-01e6-4b50-8334-86509d7e4a7b


Granite pegmatite. Berkshire pegmatite field. Found about 1811 by Dr. David Hunt of Northampton, Massachusetts. The locality was on the Joseph Clark farm. He may have spelled his name with a final "e": Clarke. This is the "type" locality for albite variety cleavelandite as well as microlite.

"The most noted locality of green and red tourmalines is in Chesterfield, on land of Mr. Clark. They are contained in an enormous vein of granite in mica slate, which corresponds nearly in direction with the layers of the slate. This granite is crossed obliquely by a vein varying in width from six to eighteen inches, of smoky quartz and silicious feldspar: or rather the quartz forms the central part of the vein and the feldspar lies on each side of the quartz: the green red and blue tourmalines, with schorl and sometimes beryl passing through the feldspar and the quartz. This cross vein has been laid open from twelve to twenty feet by blasting; and it is really in the eye of a mineralogist a splendid object. I do not see that there is any prospect that it will soon be exhausted; although I doubt whether as fine specimens are now obtained from it as formerly."

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


15 valid minerals. 2 (FRL) - first recorded locality of unapproved mineral/variety/etc. 1 erroneous literature entry.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Albite var. Cleavelandite (FRL)
Formula: Na(AlSi3O8)
Type Locality:
β“˜ Almandine
Formula: Fe2+3Al2(SiO4)3
β“˜ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Cassiterite
Formula: SnO2
β“˜ Columbite-(Fe)
Formula: Fe2+Nb2O6
β“˜ Columbite-(Mn)
Formula: Mn2+Nb2O6
β“˜ Cookeite ?
Formula: (LiAl4◻)[AlSi3O10](OH)8
β“˜ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ 'Lepidolite'
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ 'Microlite Group' (FRL)
Formula: A2-mTa2X6-wZ-n
Type Locality:
Description: Sometimes occurs directly in dark green elbaite or in contact with it. Crystals usually less than 1 mm. Given the controversy the species caused in the time period, Shepard lamented that it should have been named gigantolite, a species name he also introduced for another mineral.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Spodumene
Formula: LiAlSi2O6
References:
\
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
β“˜ 'Tourmaline var. Watermelon Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

Na(AlSi3O8)β“˜ Albite var. Cleavelandite (FRL)
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)β“˜ Elbaite
A2-mTa2X6-wZ-nβ“˜ 'Microlite Group' (FRL)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜'Microlite Group' (TL)4.00.A2-mTa2X6-wZ-n
β“˜Quartz4.DA.05SiO2
β“˜var. Smoky Quartz4.DA.05SiO2
β“˜Cassiterite4.DB.05SnO2
β“˜Columbite-(Fe)4.DB.35Fe2+Nb2O6
β“˜Columbite-(Mn)4.DB.35Mn2+Nb2O6
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Autunite8.EB.05Ca(UO2)2(PO4)2 Β· 10-12H2O
Group 9 - Silicates
β“˜Almandine9.AD.25Fe2+3Al2(SiO4)3
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Spodumene9.DA.30LiAlSi2O6
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Cookeite ?9.EC.55(LiAl4β—»)[AlSi3O10](OH)8
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite
var. Cleavelandite (TL)		9.FA.35Na(AlSi3O8)
β“˜9.FA.35Na(AlSi3O8)
β“˜Pollucite ?9.GB.05(Cs,Na)2(Al2Si4O12) Β· 2H2O
Unclassified
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
β“˜'Lepidolite'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Tourmaline
var. Watermelon Tourmaline'		-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Hβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
LiLithium
Liβ“˜ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Liβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liβ“˜ SpodumeneLiAlSi2O6
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
BBoron
Bβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Bβ“˜ Tourmaline var. Watermelon TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oβ“˜ AlmandineFe32+Al2(SiO4)3
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ CassiteriteSnO2
Oβ“˜ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Oβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ Columbite-(Fe)Fe2+Nb2O6
Oβ“˜ Columbite-(Mn)Mn2+Nb2O6
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ Quartz var. Smoky QuartzSiO2
Oβ“˜ SpodumeneLiAlSi2O6
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
Oβ“˜ Tourmaline var. Watermelon TourmalineA(D3)G6(T6O18)(BO3)3X3Z
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ AlmandineFe32+Al2(SiO4)3
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Alβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ SpodumeneLiAlSi2O6
Alβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ AlmandineFe32+Al2(SiO4)3
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Siβ“˜ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ Quartz var. Smoky QuartzSiO2
Siβ“˜ SpodumeneLiAlSi2O6
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
PPhosphorus
Pβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MnManganese
Mnβ“˜ Columbite-(Mn)Mn2+Nb2O6
FeIron
Feβ“˜ AlmandineFe32+Al2(SiO4)3
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ Columbite-(Fe)Fe2+Nb2O6
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
NbNiobium
Nbβ“˜ Columbite-(Fe)Fe2+Nb2O6
Nbβ“˜ Columbite-(Mn)Mn2+Nb2O6
SnTin
Snβ“˜ CassiteriteSnO2
CsCaesium
Csβ“˜ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
TaTantalum
Taβ“˜ Microlite GroupA2-mTa2X6-wZ-n
UUranium
Uβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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 visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Gibbs, George (1818). On the Tourmalines and Other Minerals Found at Chesterfield and Goshen, Massachusetts, American Journal of Science: 1: 346-351.
[1]Hitchcock, Edward (1833). Report on the Geology, Mineralogy, Botany, and Zoology of Massachusetts: 505-506.
Shepard, Charles Upham (1835). Microlite, a New Mineral Species, American Journal of Science: 27: 361-362.
(1917) Geology of Massachusetts and Rhode Island. Bulletin Vol. 597. US Geological Survey doi:10.3133/b597 pp.255-256
Hess, F. L., Whitney, R. J., Trefethen, J., and Slavin, M. (1943). The rare alkalis in New England, U.S. Bureau of Mines, Information Circular No. 7232: 43.
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