----- R050467 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Variscite R050467

Name: Variscite
RRUFF ID: R050467
Ideal Chemistry: Al(PO₄)·2H₂O
Locality: Garland County, Arkansas, USA
Source: University of Arizona Mineral Museum 2454 [view label]
Owner: RRUFF
Description: Green crust of flattened crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.

Quick search: [ All Variscite samples (4) ]

CHEMISTRY

RRUFF ID:	R050467.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	Al_1.00(P_0.98V_0.02)_Σ=1O₄·2H₂O

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

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To download sample data,
please select a specific
orientation angle.

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R050467

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

DOWNLOADS:

	Raman Data (Processed)
	RRUFF File
	Raman Data (RAW)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R050467.9

Sample Description:

Single crystal, powder profile is calculated

Cell Refinement Output:

a: 9.793(6)Å b: 8.541(9)Å c: 9.60(1)Å
alpha: 90° beta: 90° gamma: 90° Volume: 802.6(7)Å³ Crystal System: orthorhombic

File Type Information

Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

	X-ray Data (XY - RAW)
	RRUFF File

REFERENCES for Variscite
American Mineralogist Crystal Structure Database Record: [view record]
Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]
Breithaupt J F A (1837) Bestimmung neuer Mineralien. 4. Variscit, Journal für Praktische Chemie, 10, 506-508 [view file]
Larsen E S, Schaller W T (1925) The identity of variscite and peganite and the dimorphous form, metavariscite, American Mineralogist, 10, 23-28 [view file]
Larsen E S, Shannon E V (1930) The minerals of the phosphate nodules from near Fairfield, Utah, American Mineralogist, 15, 307-337 [view file]
Fleischer M (1963) New mineral names, American Mineralogist, 48, 1413-1421 [view file]
International Mineralogical Association (1967) Commission on new minerals and mineral names, Mineralogical Magazine, 36, 131-136 [view file]
Salvador P S, Fayos J (1972) Some aspects of the structural relationship between "Messbach-type" and "Lucin-type" variscites, American Mineralogist, 57, 36-44 [view file]
Bailey S W (1977) Report of the I.M.A-I.U.Cr. Joint Committee on Nomenclature, American Mineralogist, 62, 411-415 [view file]
Kniep R, Mootz D, Vegas A (1977) Variscite, Acta Crystallographica, B33, 263-265
Friedman S P, Medvedeva N I, Nazarova G S, Gubanov V A (1992) Electronic structure and chemical bonding in variscite crystals, Journal of Structural Chemistry, 32, 631-636
Dick S (1997) The structure of GaAsO₄•2H₂O: A new member of the variscite family, Zeitschrift für Naturforschung B Chemical Science, 52, 1337-1340
Loiseau T, Paulet C, Ferey G (1998) Crystal structure determination of the hydrated gallium phosphate GaPO₄·2H₂O, analog of variscite, Chimie de L'état Solide et Cristallochimie, 11, 667-674
Tang X, Gentiletti M J, Abdessadek L (2001) Synthesis and crystal structure of indium arsenate and phosphate dihydrates with variscite and metavariscite structure types, Journal of Chemical Crystallography, 31, 45-50
Frost R L, Weier M L, Erickson K L, Carmody O, Mills S J (2004) Raman spectroscopy of phosphates of the variscite mineral group, Journal of Raman Spectroscopy, 35, 1047-1055 [link]
Taxer K, Bartl H (2004) On the dimorphy between the variscite and clinovariscite group: refined finestructural relationship of strengite and clinostrengite, Fe(PO₄)·2H₂O, Crystal Research and Technology, 39, 1080-1088
Calas G, Galoisy L, Kiratisin A (2005) The origin of the green color of variscite, American Mineralogist, 90, 984-990 [view file]
Oxmann J F, Pham Q H, Lara R J (2008) Quantification of individual phosphorus species in sediment: a sequential conversion and extraction method, European Journal of Soil Science, 59, 1177-1190 [view file]
Rossi M, Rizzi R, Vergara A, Capitelli F, Altomare A, Bellatreccia F, Saviano M, Ghiara R M (2017) Compositional variation of turquoise-group minerals from the historical collection of the Real Museo Mineralogico of the University of Naples, Mineralogical Magazine, 81, 1405-1429
Ardit M, Phillips B L, Bish D L (2022) Crystal structure determination of orthorhombic variscite2O and its derivative AlPO₄ structure at high temperature, American Mineralogist, 107, 1385-1393

REFERENCES for Variscite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Breithaupt J F A (1837) Bestimmung neuer Mineralien. 4. Variscit, Journal für Praktische Chemie, 10, 506-508 [view file]

Larsen E S, Schaller W T (1925) The identity of variscite and peganite and the dimorphous form, metavariscite, American Mineralogist, 10, 23-28 [view file]

Larsen E S, Shannon E V (1930) The minerals of the phosphate nodules from near Fairfield, Utah, American Mineralogist, 15, 307-337 [view file]

Fleischer M (1963) New mineral names, American Mineralogist, 48, 1413-1421 [view file]

International Mineralogical Association (1967) Commission on new minerals and mineral names, Mineralogical Magazine, 36, 131-136 [view file]

Salvador P S, Fayos J (1972) Some aspects of the structural relationship between "Messbach-type" and "Lucin-type" variscites, American Mineralogist, 57, 36-44 [view file]

Bailey S W (1977) Report of the I.M.A-I.U.Cr. Joint Committee on Nomenclature, American Mineralogist, 62, 411-415 [view file]

Kniep R, Mootz D, Vegas A (1977) Variscite, Acta Crystallographica, B33, 263-265

Friedman S P, Medvedeva N I, Nazarova G S, Gubanov V A (1992) Electronic structure and chemical bonding in variscite crystals, Journal of Structural Chemistry, 32, 631-636

Dick S (1997) The structure of GaAsO₄•2H₂O: A new member of the variscite family, Zeitschrift für Naturforschung B Chemical Science, 52, 1337-1340

Loiseau T, Paulet C, Ferey G (1998) Crystal structure determination of the hydrated gallium phosphate GaPO₄·2H₂O, analog of variscite, Chimie de L'état Solide et Cristallochimie, 11, 667-674

Tang X, Gentiletti M J, Abdessadek L (2001) Synthesis and crystal structure of indium arsenate and phosphate dihydrates with variscite and metavariscite structure types, Journal of Chemical Crystallography, 31, 45-50

Frost R L, Weier M L, Erickson K L, Carmody O, Mills S J (2004) Raman spectroscopy of phosphates of the variscite mineral group, Journal of Raman Spectroscopy, 35, 1047-1055 [link]

Taxer K, Bartl H (2004) On the dimorphy between the variscite and clinovariscite group: refined finestructural relationship of strengite and clinostrengite, Fe(PO₄)·2H₂O, Crystal Research and Technology, 39, 1080-1088

Calas G, Galoisy L, Kiratisin A (2005) The origin of the green color of variscite, American Mineralogist, 90, 984-990 [view file]

Oxmann J F, Pham Q H, Lara R J (2008) Quantification of individual phosphorus species in sediment: a sequential conversion and extraction method, European Journal of Soil Science, 59, 1177-1190 [view file]

Rossi M, Rizzi R, Vergara A, Capitelli F, Altomare A, Bellatreccia F, Saviano M, Ghiara R M (2017) Compositional variation of turquoise-group minerals from the historical collection of the Real Museo Mineralogico of the University of Naples, Mineralogical Magazine, 81, 1405-1429

Ardit M, Phillips B L, Bish D L (2022) Crystal structure determination of orthorhombic variscite2O and its derivative AlPO₄ structure at high temperature, American Mineralogist, 107, 1385-1393