Club	Location	Distance
New Haven Mineral Club	New Haven, Connecticut	4km
Lapidary and Mineral Society of Central Connecticut	Meriden, Connecticut	25km
Bristol Gem & Mineral Club	Bristol, Connecticut	37km
Danbury Mineralogical Society	Danbury, Connecticut	42km

Mindat Locality ID:

213300

Long-form identifier:

mindat:1:2:213300:6

GUID (UUID V4):

An old trap rock quarry in the Pine Rock portion of the Jurassic West Rock Diabase sill/dike complex. Dana (1891) mentions it is near the eastern end of the hill. It is just on the border with New Haven and many old references to minerals allegedly found in New Haven (like Robinson (1825), Schairer (1931), Sohon (1951), Januzzi (1976)) are really attributable to this quarry.

Ryerson (1976) describes the Pine Rock Quarry thusly: "This quarry is located off Fitch Street opposite the complex of Southern Connecticut State College, and on the same side as the cemetery. Apophyllite, chabazite, heulandite, prehnite and laumonite, as well as other zeolite minerals, have been reported from the Pine Rock Quarry."

The Yale Peabody Museum collection includes andradite specimens similar to those from Mill Rock and East Rock diabase intrusions, see link below.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Mineral List

ⓘ Andradite

ⓘ Calcite

ⓘ 'Chabazite'

ⓘ Fluorapophyllite-(K)

ⓘ 'Heulandite Subgroup'

ⓘ Laumontite

ⓘ Prehnite

ⓘ 'Stilbite Subgroup'

5 valid minerals.

Detailed Mineral List:

ⓘ Andradite

Formula:Ca₃Fe³⁺₂(SiO₄)₃

Colour: black

Description: Crystals to about 5mm in mineralized joints.

References:

Yale Peabody Museum collection

ⓘ Calcite

Formula:CaCO₃

Habit: scalenohedral

Colour: colorless

Description: micro crystals on prehnite aggregates

References:

Ted Johnson collection (former Alfred E. Hammer collection)

ⓘ 'Chabazite'

References:

Ryerson, Kathleen H. (1972) ROCK HOUNDS GUIDE TO CONNECTICUT

ⓘ Fluorapophyllite-(K)

Formula:KCa₄(Si₈O₂₀)(F,OH) · 8H₂O

Habit: bipyramidal and prismatic combos or tabular

Colour: colorless

Description: Typically small (<0.5 cm) crystals on prehnite, or tabular around 1 cm. Species ID based on analyses of multiple specimens from various Connecticut localities, which are all fluorapophyllite-(K).

References:

Januzzi, Ron E., Seaman, David M. (1976)Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.p.273

ⓘ 'Heulandite Subgroup'

Formula:(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

Habit: rhombohedral

Colour: colorless to fleshy red

Description: small colorless and large fleshy red rhombs.

References:

Schairer, John F. (1931): Minerals of Connecticut. State Geological and Natural History Survey Bulletin 51.

ⓘ Laumontite

Formula:CaAl₂Si₄O₁₂ · 4H₂O

References:

Schairer, John F. (1931): Minerals of Connecticut. State Geological and Natural History Survey Bulletin 51.

ⓘ Prehnite

Formula:Ca₂Al₂Si₃O₁₀(OH)₂

Habit: botryoidal aggregates

Colour: pale green

References:

Ryerson, Kathleen H. (1972) ROCK HOUNDS GUIDE TO CONNECTICUT

Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index.Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569

ⓘ 'Stilbite Subgroup'

Formula:M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

References:

Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index.Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Andradite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Fluorapophyllite-(K)	9.EA.15	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'Chabazite'	-
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Calcite	CaCO₃
O	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
F	Fluorine
F	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Na	Sodium
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	Aluminium
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	Silicon
Si	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
K	Potassium
K	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	Calcium
Ca	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Fe	Iron
Fe	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Ganderia DomainDomain
GranderiaPassive Margin

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References

collections.peabody.yale.edu (n.d.)https://collections.peabody.yale.edu/search/Record/YPM-MIN-027100

Dana, James D. (1891) On the Four Rocks of the New Haven Area, East Rock, West Rock, Pine Rock and Mill Rock, in Illustration of the Features of Non-Volcanic Igneous Injections. With a Guide to Walks and Drives about New Haven. Tuttle, Morehouse and Taylor, New Haven: 9.

Schairer, John F. (1931): Minerals of Connecticut. State Geological and Natural History Survey Bulletin 51.

Jones, Robert W. Jr., (1960), Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Fluorescent House. Branford, Connecticut.

Ryerson, Kathleen H. (1972): Rock Hound's Guide to Connecticut. Pequot Press.

Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index.Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569p.403

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Pine Rock Quarry (Farnham Quarry), Hamden, New Haven County, Connecticut, USA i
Regional Level Types
Pine Rock Quarry (Farnham Quarry) Quarry
Hamden Town
New Haven County County
Connecticut State
USA Country

Select Mineral List Type

Mineral List

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

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Pine Rock Quarry (Farnham Quarry), Hamden, New Haven County, Connecticut, USAiRegional Level TypesPine Rock Quarry (Farnham Quarry)Quarry HamdenTown New Haven CountyCounty ConnecticutState USACountry

Select Mineral List Type

Mineral List

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Pine Rock Quarry (Farnham Quarry), Hamden, New Haven County, Connecticut, USA i
Regional Level Types
Pine Rock Quarry (Farnham Quarry) Quarry
Hamden Town
New Haven County County
Connecticut State
USA Country