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Biotite from
Whistling Cay, St. John, U.S. Virgin Islands, USA


Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Whistling Cay, St. John, U.S. Virgin Islands, USA
Data Identifiers
Mindat Occurrence Record ID:608115
Long-form Identifier:1:3:608115:7
GUID (UUID V4):ffe6f8ff-35e9-4049-8543-cebcbd67ecc6
Nearest other occurrences of Biotite
35.5km (22.1 miles) ⓘCopper Mine Point, Virgin Gorda Island, British Virgin Islands
References
Rankin, Douglas W. (2002) Geology of St. John, U.S. Virgin Islands. Professional Paper 1631. US Geological Survey doi:10.3133/pp1631
Reference Search (possible matching items)
Rankin, Douglas W. (2002) Geology of St. John, U.S. Virgin Islands. Professional Paper 1631. US Geological Survey doi:10.3133/pp1631
Report (issue)
Page 1 D U.S. Department of the Interior U.S. Geological Survey Geology of St. John, U.S. Virgin Islands...Rankin—GEOLOGY OF ST. JOHN, U.S. VIRGIN ISLANDS—U.S. Geological Survey Professional Paper 1631 U.S. GEOLOGICAL...Trunk Bay on the northern coast of St. John, U.S. Virgin Islands. Trunk Cay is located just to the left of...Thatch Islands of the British Virgin Islands, and Mary Point, which is to the northeast on St. John. U... U.S. Department of the Interior U.S. Geological Survey Geology of St. John, U.S. Virgin Islands By Douglas
Rankin, D.W. (1997) Geologic maps of St. John, U.S. Virgin Islands. Open-File Report Vol. 1997 (97-472) US Geological Survey doi:10.3133/ofr97472
Report (issue)
U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY GEOLOGIC MAPS OF ST. JOHN, U.S. VIRGIN ISLANDS...preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the...purposes only and does not imply endorsement by the U.S. Government. 1997 DESCRIPTION OF MAP UNITS Dikes...by large bipyramidal quartz and barrel-shaped biotite phenocrysts. Groundmass aphanitic to fine-grained...abundant as 45 percent, of quartz, plagioclase, biotite, less commonly hornblende, and prominent apatite
(1994) Geochemistry, mineralogy, and geochronology of the U.S. Virgin Islands. Bulletin Vol. 2057. US Geological Survey doi:10.3133/b2057
Report (volume)
Mineralogy, and Geochronology of the U.S. Virgin IslandS" U.S. GEOLOGICAL SURVEY BULLETIN 2057 AVAILABILITY...AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey...catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publications...List." Publications that may be listed in various U.S. Geological Survey catalogs (see back inside cover)...writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please
Washington, H.S. (1917) Chemical analyses of igneous rocks published from 1884 to 1913, inclusive, with a critical discussion of the character and use of analyses. Professional Paper 99. US Geological Survey doi:10.3133/pp99
Report (issue)
according to the quantitative system of classification: U.S. Gool. Survey Prof. Paper 28, 1904. a Grubenmann...llllllebro;nd, W. F., U.S. Geol. Survey Dull.148, p. 16, 1897. • Plrsson, L. V., U.S. Geol. Survey Twentieth...mica, will o! -------·1 Cf. Hillebrand, W. F., U.S. Geol. Survey Bull. 148, p. 23, 189i. ACCURACY...to the apparent weight of the alumina •·St~·kes, H. N., U.S. Geol. Survey Bull.186, 1901. of the ·rock...24, pp. 362 et seq., 1902. 2 Hillebrand, W. F., U.S. Geol. Survey Dull.176, p. 55, 1900. a Pfrsson, L
 
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