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:
St Thomas, U.S. Virgin Islands, USA

mindat Locality ID: 192284
mindat URL: http://www.mindat.org/loc-192284.html

Tectonic Settings:

Total number of sublocalities beneath "St Thomas, U.S. Virgin Islands, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Charlotte Amalie Harbor
Cyril E. King Airport
Havensight Point - Salley Bay
Jersey Bay
Nadir

Latitude: 18°19'40"N
Longitude: 64°54'50"W
Decimal Degree (lat, lon): 18.327777777778,-64.913888888889

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.

Analcime	Calcite	Clay	Clinozoisite	Copper	Epidote	Feldspar	Malachite	Mica	None
Prehnite	Pyrite	Pyroxene	Quartz	Sulphur	Wurtzite

Albite ()*	Anorthite ()*	Augite ()*	Calcite ()*	Diopside ()*
Epidote ()*	Gold ()*	Iodargyrite ()*	Malachite ()*	Muscovite ()*
Prehnite ()*	Pyrite ()*	Quartz ()*	Sulphur ()*	Wairakite ()*

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: Ag Al Au C Ca Cu Fe H I K Mg Na O S Si

Elements from minerals reported directly at this locality: Ca Fe Mg O S Si

Structural Groups for minerals in this locality:
Analcime Calcite Clay Clinozoisite Copper Epidote Feldspar Malachite Mica None
Prehnite Pyrite Pyroxene Quartz Sulphur Wurtzite

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	271141	8803
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1	271141	1036
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	0		2060
Calcite ()*	Calcite	Ca(CO₃)	1	271141	27770
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	271141	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	271139,271141	8173
Gold ()*	Copper	Au	1	271137	30554
Iodargyrite ()*	Wurtzite	AgI	1	271138	180
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	271138	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	271141	17380
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1	271141	1898
Pyrite ()*	Pyrite	FeS₂	1	271141	39462
Quartz ()*	Quartz	SiO₂	3	271137,271139,271141	61156
Sulphur ()*	Sulphur	S	0		2045
Wairakite ()*	Analcime	Ca(Si₄Al₂)O₁₂·2H₂O	1	271141	73

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...