Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.90

ⓘ Calcite

Formula: CaCO₃

Localities:

New York Traprock Quarry, West Nyack, Clarkstown, Rockland County, New York, USA
Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

ⓘ Chrysocolla

Formula: Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1

Locality: New York Traprock Quarry, West Nyack, Clarkstown, Rockland County, New York, USA

References:

Jensen (1978) Minerals of New York State, p.82

ⓘ Djurleite

Formula: Cu₃₁S₁₆

Locality: New York Traprock Quarry, West Nyack, Clarkstown, Rockland County, New York, USA

References:

NY State Museum spec. no. 18031

ⓘ Hematite

Formula: Fe₂O₃

Locality: Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

References:

Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.90

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

Locality: Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

References:

Hershel Friedman

ⓘ Pectolite

Formula: NaCa₂Si₃O₈(OH)

Locality: Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

References:

Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.90

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

Locality: Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

References:

Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.90

ⓘ 'Stilbite Subgroup'

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

Locality: Rockland Lake Landing, Rockland Lake, Clarkstown, Rockland County, New York, USA

References:

Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.90

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Djurleite	2.BA.05	Cu₃₁S₁₆
Group 4 - Oxides and Hydroxides
ⓘ	Hematite	4.CB.05	Fe₂O₃
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Pectolite	9.DG.05	NaCa₂Si₃O₈(OH)
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Chrysocolla	9.ED.20	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
Unclassified
ⓘ	'Apophyllite Group'	-	AB₄[Si₈O₂₀]X · 8H₂O
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
H	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
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	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Na	Sodium
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Al	Aluminium
Al	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	Silicon
Si	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
Si	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
S	Sulfur
S	ⓘ Djurleite	Cu₃₁S₁₆
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Fe	Iron
Fe	ⓘ Hematite	Fe₂O₃
Cu	Copper
Cu	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Cu	ⓘ Djurleite	Cu₃₁S₁₆

Fossils

There are 8 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

Youngest Fossil Listed

209 Ma (Late/Upper Triassic)

Oldest Fossil Listed

228 Ma (Late/Upper Triassic)

Stratigraphic Units

Unit	No. Occurrences	Age
Chatham - Stockton	8	228 - 208.5 Ma (Late/Upper Triassic)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Phytosauria unranked clade	Animalia : Chordata : Reptilia : Eosuchia : Phytosauria	228 - 208.5 Ma Late/Upper Triassic
Chirotherium eyermani species	Animalia : Chordata : Reptilia : Thecodontia : Chirotherium : *Chirotherium eyermani*	228 - 208.5 Ma Late/Upper Triassic
Apatopus lineatus species	Animalia : Chordata : Reptilia : Eosuchia : Parasuchidae : Apatopus : *Apatopus lineatus*	228 - 208.5 Ma Late/Upper Triassic
Rhynchosauroides hyperbates species	Animalia : Chordata : Reptilia : Rhynchocephalia : Rhynchosauroides : *Rhynchosauroides hyperbates*	228 - 208.5 Ma Late/Upper Triassic
Grallator (Eubrontes) subgenus	Animalia : Chordata : Saurischia : Eubrontidae : *Grallator (Eubrontes)*	228 - 208.5 Ma Late/Upper Triassic
Atreipus genus	Animalia : Chordata : Reptilia : *Atreipus*	228 - 208.5 Ma Late/Upper Triassic
Brachychirotherium genus	Animalia : Chordata : Reptilia : Chirotheriidae : *Brachychirotherium*	228 - 208.5 Ma Late/Upper Triassic
Chirotherium lulli species	Animalia : Chordata : Reptilia : Chirotheriidae : Chirotherium : *Chirotherium lulli*	228 - 208.5 Ma Late/Upper Triassic

Fossil Localities

Click to show 1 fossil locality

USA

New York
- Rockland County
  - Late/Upper Triassic🐚 Nyack Beach State Park tracksite

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Clarkstown,_New_York
Wikidata ID:	Q2430250
GeoNames ID:	5112845

Localities in this Region

USA

New York
- Rockland County
  - Clarkstown
    - ⭔Rockland Lake
      - Rockland Lake Landing
    - ⭔West Nyack
      - New York Traprock Quarry

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Laurentides DomainPassive Margin

USA

Palisades SillSill

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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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

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