Neptunite R060746

Name: Neptunite
RRUFF ID: R060746
Ideal Chemistry: KNa2LiFe2+2Ti2Si8O24
Locality: San Benito Mountains, San Benito County, California, USA
Source: California Institute of Technology 12952 [view label]
Owner: RRUFF
Description: Deep red-black fragment of a prismatic single crystal
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Neptunite (4) ]
Quick search: [ All Neptunite samples (2) ]
RRUFF ID: R060746.2
Sample Description: Microprobe Fragment
Measured Chemistry: K1.00Na2.00Li1.00(Fe2+1.48Mg0.36Mn0.16)Σ=2Ti2.00Si8.00O24
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample.

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RRUFF ID: R060746
Sample Description: Unoriented sample.
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060746.1
Sample Description: powder
Cell Refinement Output: a: 16.444(1)Å    b: 12.494(2)Å    c: 9.988(1)Å
alpha: 90°    beta: 115.577(9)°    gamma: 90°   Volume: 1850.9(0)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 Neptunite

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]

Flink G (1893) Om några mineral från Grönland, Geologiska Föreningens i Stockholm Förhandlingar, 15, 195-208   [view file]

Gossner B, Mussgnug F (1928) Über die systematische Stellung von Neptunit und Babingtonit, Centralblatt für Mineralogie, Geologie und Paläontologie, 1928, 274-281

Heinrich E W, Quon S H (1963) Neptunite from Seal Lake, Labrador, The Canadian Mineralogist, 7, 650-654   [view file]

Borisov S V, Klevtsova R F, Bakakin V V, Belov N V (1966) The crystal structure of neptunite, Soviet Physics - Crystallography, 10, 684-689   [view file]

Cannillo E, Mazzi F, Rossi G (1966) The crystal structure of neptunite, Acta Crystallographica, 21, 200-208

Laird J, Albee A L (1972) Chemical composition and physical, optical, and structural properties of benitoite, neptunite and joaquinite, American Mineralogist, 57, 85-102   [view file]

Kunz M, Armbruster T, Lager G A, Schultz A J, Goyette R J, Lottermoser W, Amthauer G (1991) Fe, Ti ordering and octahedral distortions in acentric neptunite: Temperature dependent X-ray and neutron structure refinements and Mössbauer spectroscopy, Physics and Chemistry of Minerals, 18, 199-213

Jambor J L, Grew E S (1993) New mineral names, American Mineralogist, 78, 233-238   [view file]

Karimova O, Yakubovich O, Zadov A, Gazeev V, Pertsev N, Ivanova A (2010) The crystal structure of magnesioneptunite in the context of neptunite crystal chemistry, Acta Crystallographica, A66, s185-s185