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Silliman's Verd Antique Quarry, West Haven, New Haven County, Connecticut, USAi
Regional Level Types
Silliman's Verd Antique QuarryQuarry (Abandoned)
West HavenCity
New Haven CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 18' 43'' North , 72° 58' 41'' West
Latitude & Longitude (decimal):
Type:
Quarry (Abandoned) - last checked 2015
KΓΆppen climate type:
Nearest Settlements:
PlacePopulationDistance
New Haven130,322 (2017)4.2km
Woodbridge9,355 (2017)5.1km
West Haven54,927 (2017)5.3km
Orange13,956 (2017)5.5km
Ansonia18,854 (2017)9.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
New Haven Mineral ClubNew Haven, Connecticut4km
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut29km
Bristol Gem & Mineral ClubBristol, Connecticut40km
Danbury Mineralogical SocietyDanbury, Connecticut41km
Mindat Locality ID:
267047
Long-form identifier:
mindat:1:2:267047:1
GUID (UUID V4):
1bae84cf-5d37-42f6-ad89-22e7fbbb9927


A small quarry in a serpentinite body near the north end of the northern Maltby Lake. It appears to have originally been dunnite caught up in continental collision and included within the Ordovician Malty Lake metamorphic rocks in the Orange-Milford Terrane. It was quarried in the 1810s by Benjamin Silliman, later of Yale College mineralogy fame, but the rocks did not stand up to weathering well. Before 1822, when West Haven was subdivided from New Haven and became part of Orange, the locality was referenced as being in New Haven.

Dana (1891) says the outcrop was known as the "Serpentine Crag" and that banded, yellow-green, variegated with yellowish white and black (from magnetite) slabs were polished and placed in the Yale College cabinet. Chrysotile and diopside were also noted.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

β“˜ Calcite
Formula: CaCO3
Habit: massive
Colour: white
β“˜ Chromite
Formula: Fe2+Cr3+2O4
Habit: granular
Colour: black
Description: as cores in magnetite grains
β“˜ Chrysotile
Formula: Mg3(Si2O5)(OH)4
β“˜ Diopside
Formula: CaMgSi2O6
β“˜ Dolomite
Formula: CaMg(CO3)2
Habit: massive
Colour: tan
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Habit: granular
Colour: black
Description: grains have cores composed of chromite
βœͺ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Colour: white, yellow, green
Description: massive, variegated

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Chromite4.BB.05Fe2+Cr3+2O4
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Chrysotile9..Mg3(Si2O5)(OH)4
β“˜Diopside9.DA.15CaMgSi2O6
Unclassified
β“˜'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hβ“˜ ChrysotileMg3(Si2O5)(OH)4
Hβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ DolomiteCaMg(CO3)2
OOxygen
Oβ“˜ CalciteCaCO3
Oβ“˜ ChrysotileMg3(Si2O5)(OH)4
Oβ“˜ ChromiteFe2+Cr23+O4
Oβ“˜ DiopsideCaMgSi2O6
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgβ“˜ ChrysotileMg3(Si2O5)(OH)4
Mgβ“˜ DiopsideCaMgSi2O6
Mgβ“˜ DolomiteCaMg(CO3)2
SiSilicon
Siβ“˜ ChrysotileMg3(Si2O5)(OH)4
Siβ“˜ DiopsideCaMgSi2O6
Siβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ DiopsideCaMgSi2O6
Caβ“˜ DolomiteCaMg(CO3)2
CrChromium
Crβ“˜ ChromiteFe2+Cr23+O4
FeIron
Feβ“˜ ChromiteFe2+Cr23+O4
Feβ“˜ MagnetiteFe2+Fe23+O4

Other Regions, Features and Areas containing this locality


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.

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