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. John, U.S. Virgin Islands, USA

mindat Locality ID: 73222
mindat URL: http://www.mindat.org/loc-73222.html

Tectonic Settings:

Total number of sublocalities beneath "St. John, U.S. Virgin Islands, USA": 8
Total number of bottom-level sublocalities: 8

Number of Child Localities: 8
Child Localities:
Annaberg Point
Bordeaux Mountain
Fungi Passage
Kiddel Point
Mary Point
Watermelon Cay
Whistling Cay
White Cliffs

Latitude: 18°20'59"N
Longitude: 64°44'5"W
Decimal Degree (lat, lon): 18.349722222222,-64.734722222222

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	Atacamite	Baryte	Beryl	Calcite	Clay	Clinozoisite	Epidote	Feldspar	Mica
None	Prehnite	Pyrite	Pyroxene	Quartz	Rutile	Spinel	Titanite	Turquoise	Vesuvianite
Wollastonite	Wurtzite

Albite ()*	Alunite ()*	Augite ()*	Baryte ()*	Calcite ()*
Cassiterite ()*	Clinozoisite ()*	Cordierite ()*	Diopside ()*	Epidote ()*
Iodargyrite ()*	Maghemite ()*	Magnetite ()*	Orthoclase ()*	Paratacamite ()*
Phlogopite ()*	Prehnite ()*	Pyrite ()*	Quartz ()*	Romarchite ()*
Tin ()*	Titanite ()*	Tremolite ()*	Turquoise ()*	Vesuvianite ()*
Wollastonite ()*

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 Ba C Ca Cl Cu F Fe H I K Mg Na O P S Si Sn Ti Zn

Elements from minerals reported directly at this locality: Al Ca Fe Mg Na O Si Sn

Structural Groups for minerals in this locality:
Amphibole Atacamite Baryte Beryl Calcite Clay Clinozoisite Epidote Feldspar Mica
None Prehnite Pyrite Pyroxene Quartz Rutile Spinel Titanite Turquoise Vesuvianite
Wollastonite Wurtzite

26 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)	0		8803
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	1	271150	966
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	0		2060
Baryte ()*	Baryte	Ba(SO₄)	1	271147	11547
Calcite ()*	Calcite	Ca(CO₃)	5	271143,271145,271146,271147,271148	27770
Cassiterite ()*	Rutile	SnO₂	0		5171
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	271146	1025
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	1	271149	1008
Diopside ()*	Pyroxene	CaMgSi₂O₆	4	271143,271147,271148,271149	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	4	271143,271145,271146,271147	8173
Iodargyrite ()*	Wurtzite	AgI	1	271147	180
Maghemite ()*	Spinel	(Fe³⁺_0.67 _0.33)Fe³⁺₂O₄	0		229
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	271147	14899
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	271147	2349
Paratacamite ()*	Atacamite	Cu₃(Cu,Zn)Cl₂(OH)₆	1	271150	158
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	1	271149	2273
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1	271146	1898
Pyrite ()*	Pyrite	FeS₂	1	271147	39462
Quartz ()*	Quartz	SiO₂	4	271146,271147,271149,271150	61156
Romarchite ()*	None	SnO	0		13
Tin ()*	None	Sn	0		63
Titanite ()*	Titanite	CaTi(SiO₄)O	3	271147,271148,271149	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1	271145	2562
Turquoise ()*	Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O	1	271150	484
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	1	271143	1395
Wollastonite ()*	Wollastonite	CaSiO₃	3	271143,271148,271149	1247

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...