Orthoclase R050367

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Record 7 of 10  

Name: Orthoclase
RRUFF ID: R050367
Ideal Chemistry: K(AlSi3O8)
Locality: Pazunseik, Mandalay Division, Burma
Source: Marcus Origlieri
Owner: RRUFF
Description: Green crystal associated with topaz. Single-crystal structure refinement was conducted to demonstrate that it is orthoclase.
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ feldspar (62) ]
Quick search: [ All Orthoclase samples (10) ]
RRUFF ID: R050367.2
Sample Description: Microprobe fragment
Measured Chemistry: (K0.90Na0.10)Σ=1Al1.00Si3.00O8; trace amounts of Fe
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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Raman Mode Analysis
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RRUFF ID: R050367
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050367.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
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RRUFF ID: R050367.1
Sample Description: Powder
Cell Refinement Output: a: 8.5949(4)Å    b: 12.9830(4)Å    c: 7.2063(3)Å
alpha: 90°    beta: 116.057(3)°    gamma: 90°   Volume: 722.40(4)Å3    Crystal System: monoclinic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Orthoclase

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 (1823) Feldspath. Orthoklas, in Vollständige Charakteristik des Mineral-Systems. Arnoldischen Buchhandlung Dresden 271-275   [view file]

Breithaupt J F A (1826) Bemerkungen über das geschlecht des feldspath - Grammit´s und beschreibung des oligoklases, einer neuen spezies desselben, Annalen der Physik und Chemie, 8, 231-242   [view file]

Kôzu S (1916) The dispersion phenomena of some monoclinic felspars, Mineralogical Magazine, 17, 253-273   [view file]

Chao S H, Hargreaves A, Taylor W H (1940) The structure of orthoclase, Mineralogical Magazine, 25, 498-512

Cole W F, Sörum H, Kennard O (1949) The crystal structures of orthoclase and sanidized orthoclase, Acta Crystallographica, 2, 280-287

Coombs D S (1954) Ferriferous orthoclase from Madagascar, Mineralogical Magazine, 30, 409-427   [view file]

Mackenzie R C (1955) Mineralogical Society (London), American Mineralogist, 40, 773-780   [view file]

Jones J B, Taylor W H (1961) The structure of orthoclase, Acta Crystallographica, 14, 443-456

International Mineralogical Association (1962) International Mineralogical Association: Commission on new minerals and mineral names, Mineralogical Magazine, 33, 260-263   [view file]

Colville A A, Ribbe P H (1968) The crystal structure of an adularia and a refinement of the structure of orthoclase, American Mineralogist, 53, 25-37   [view file]

Faye G H (1969) The optical absorption spectrum of tetrahedrally bonded Fe3+ in orthoclase, The Canadian Mineralogist, 10, 112-117   [view file]

Prince E, Donnay G, Martin R F (1973) Neutron diffraction refinement of an ordered orthoclase structure, American Mineralogist, 58, 500-507   [view file]

Fenn P M, Brown G E (1977) Crystal structure of a synthetic, compositionally intermediate, hypersolvus alkali feldspar: evidence for Na, K site ordering, Zeitschrift für Kristallographie, 145, 124-145

Dal Negro A, De Pieri R, Quareni S, Taylor W H (1978) The crystal structures of nine K feldspars from the Adamello Massif (Northern Italy), Acta Crystallographica, B34, 2699-2707

Ferguson R B (1979) Whence orthoclase and microcline? A crystallographer’s interpretation of potassium feldspar phase relations, The Canadian Mineralogist, 17, 515-525   [view file]

Dal Negro A, De Pieri R, Quareni S, Taylor W H (1980) The crystal structures of nine K feldspars from the Adamello Massif (Northern Italy): erratum, Acta Crystallographica, B36, 3211

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International Mineralogical Association (1980) International Mineralogical Association: Commission on new minerals and mineral names, Mineralogical Magazine, 43, 1053-1055   [view file]

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Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen, Dissertation Kernforshungszentrum Karlsruhe, 1, 1-97

Su S C, Ribbe P H, Bloss F D (1986) Alkali feldspars: Structural state determined from composition and optic axial angle 2V, American Mineralogist, 71, 1285-1296   [view file]

Glazner A F (1988) Stratigraphy, structure, and potassic alteration of Miocene volcanic rocks in the Sleeping Beauty area, central Mojave Desert, California, Geological Society of America Bulletin, 100, 424-435   [view file]

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Harris M J, Salje E K H, Guttler B K, Carpenter M A (1989) Structural states of natural potassium feldspar: An infrared spectroscopic study, Physics and Chemistry of Minerals, 16, 649-658

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Tseng H Y, Heaney P J, Onstott T C (1995) Characterization of lattice strain induced by neutron irradiation, Physics and Chemistry of Minerals, 22, 399-405

Zhang M, Salje E K H, Carpenter M A, Parsons I, Kroll H, Reed S J B, Graeme-Barber A (1997) Exsolution and Al-Si disorder in alkali feldspars: Their analysis by infrared spectroscopy, American Mineralogist, 82, 849-857   [view file]

Liu L, El Gorsey A (2007) High-pressure phase transitions of the feldspars, and further characterization of lingunite, International Geology Review, 49, 854-860

Freeman J J, Wang A, Kuebler K E, Jolliff B L, Haskin L A (2008) Characterization of natural feldspars by Raman spectroscopy for future planetary exploration, The Canadian Mineralogist, 46, 1477-1500   [view file]

Gunter M E (2010) Defining asbestos: differences between the built and natural environments, Chimia, 64, 747-752

Parsons I (2010) Feldspars defined and described: a pair of posters published by the Mineralogical Society. Sources and supporting information, Mineralogical Magazine, 74, 529-551   [view file]

Angel R J, Ross N L, Zhao J, Sochalski-Kolbus L, Krüger H, Schmidt B C (2013) Structural controls on the anisotropy of tetrahedral frameworks: the example of monoclinic feldspars, European Journal of Mineralogy, 25, 597-614

Waeselmann N, Brown J M, Angel R J, Ross N, Zhao J, Kaminsky W (2016) The elastic tensor of monoclinic alkali feldspars, American Mineralogist, 101, 1228-1231

Zagorsky V Y, Peretyazhko I S, Dmitrieva A S (2016) Axinite-(Mn) from miarolitic granitic pegmatites of the Malkhan gem-tourmaline deposit (Transbaikalia, Russia): composition, paragenesis and conditions of formation, European Journal of Mineralogy, 28, 811-824

Nespolo M, Souvignier B (2017) Structural analysis of twins in feldspars. I. Calsbad twinning, European Journal of Mineralogy, 29, 939-947