Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Portsmouth, Newport Co., Rhode Island, USA

mindat Locality ID: 17364
mindat URL: http://www.mindat.org/loc-17364.html

Tectonic Settings:

Total number of sublocalities beneath "Portsmouth, Newport Co., Rhode Island, USA": 8
Total number of bottom-level sublocalities: 8

Number of Child Localities: 8
Child Localities:
Case Coal Mine (Mount Hope Coal Mine)
Cory's Lane (Corys Lane Prospect)
Dyer Island
Hummock Granite Quarry
Mitchell Mine
New England Coal Mine (Aquidneck Coal Mine)
Priory Prospect
Taunton Copper Company Coal Mines (Portsmouth Coal Mine)

Latitude: 41°35'30"N
Longitude: 71°17'17"W
Decimal Degree (lat, lon): 41.591666666667,-71.288055555556

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amphibole	Calcite	Chalcopyrite	Chlorite	Chloritoid	Clay	Corundum	Diaspore	Feldspar	Gypsum
Mica	None	Pyrite	Quartz	Rocksalt	Staurolite	Sulphur

Calcite ()*	Chalcopyrite ()*	Clinochlore ()*	Goethite ()*	Graphite ()*
Gypsum ()*	Halite ()*	Hematite ()*	Ilmenite ()*	Microcline ()*
Muscovite ()*	Ottrélite ()*	Pyrite ()*	Quartz ()*	Siderite ()*
Staurolite ()*	Sulphur ()*	Tremolite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al C Ca Cl Cu Fe H K Mg Mn Na O S Si Ti

Elements from minerals reported directly at this locality: Al C Cu Fe H O S Si Ti

Structural Groups for minerals in this locality:
Amphibole Calcite Chalcopyrite Chlorite Chloritoid Clay Corundum Diaspore Feldspar Gypsum
Mica None Pyrite Quartz Rocksalt Staurolite Sulphur

18 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	1	263431	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	0		27198
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	1	263424	1756
Goethite ()*	Diaspore	FeO(OH)	1	263431	7437
Graphite ()*	None	C	3	263424,263430,263431	2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	263431	6890
Halite ()*	Rocksalt	NaCl	1	263431	1398
Hematite ()*	Corundum	Fe₂O₃	3	263424,263428,263431	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	0		5433
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	263427	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	263425	17380
Ottrélite ()*	Chloritoid	Mn²⁺Al₂O(SiO₄)(OH)₂	2	263424,263429	59
Pyrite ()*	Pyrite	FeS₂	4	263424,263425,263428,263431	39462
Quartz ()*	Quartz	SiO₂	8	263424,263425,263426,263427,263428,263429,263430,263431	61156
Siderite ()*	Calcite	Fe(CO₃)	0		6417
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	0		978
Sulphur ()*	Sulphur	S	1	263431	2045
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	3	263424,263428,263431	2562

No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...