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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Sandy Hill, Haddam, Middlesex County, Connecticut, USAi
Regional Level Types
Sandy HillHill
HaddamTown
Middlesex CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 28' 38'' North , 72° 31' 15'' West
Latitude & Longitude (decimal):
41.47722,-72.52083
GRN:
N28W40
Type:
Hill
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Higganum1,698 (2017)3.7km
East Haddam9,042 (2017)5.6km
Moodus1,413 (2017)6.5km
Chester Center1,558 (2017)10.2km
East Hampton2,691 (2017)11.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut25km
New Haven Mineral ClubNew Haven, Connecticut39km
Bristol Gem & Mineral ClubBristol, Connecticut42km
Mindat Locality ID:
263154
Long-form identifier:
mindat:1:2:263154:0
GUID (UUID V4):
0


Williams (circa 1945): "On the Ponset Road near the Spencer house, in decomposed mica schist Cyanite blue and white. Nearby in a cordierite gneiss, Anthophyllite, and Garnets." On the map legend the spot is called "Sandy Hill". Coordinates are approximate.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘKyanite9.AF.15Al2(SiO4)O
ⓘAnthophyllite9.DD.05◻{Mg2}{Mg5}(Si8O22)(OH)2
Unclassified
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
OOxygen
Oⓘ Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Oⓘ KyaniteAl2(SiO4)O
Oⓘ Garnet GroupX3Z2(SiO4)3
MgMagnesium
Mgⓘ Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
AlAluminium
Alⓘ KyaniteAl2(SiO4)O
SiSilicon
Siⓘ Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Siⓘ KyaniteAl2(SiO4)O
Siⓘ Garnet GroupX3Z2(SiO4)3

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Williams, Horace S. (circa 1945): Article for New York Society of Mineralogists. Brainerd Public Library, Haddam, Connecticut.
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