Ferro-holmquistite R070005

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Name: Ferro-holmquistite
RRUFF ID: R070005
Ideal Chemistry: ◻Li2(Fe2+3Al2)Si8O22(OH)2
Locality: Mount Marrion, South Australia, Australia
Source: Michael Scott S101201 [view label]
Owner: RRUFF
Description: Dark blue fractured prismatic crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ amphibole (107) ]
RRUFF ID: R070005.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Li1.93Na0.03Mn0.020.02)Σ=2((Fe2+1.52Mg1.48)Σ=3(Al1.91Fe3+0.09)Σ=2)Σ=5Si8.00O22(OH)2; Li estimated by difference Li=2-(Na+K+Ca+Mn) and charge balance; OH by charge balance
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R070005
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R070005.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 18.272(3)Å    b: 17.666(2)Å    c: 5.2682(9)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1700.5(6)Å3    Crystal System: orthorhombic
  File Type Information Close
Calculated diffraction file.

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

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REFERENCES for Ferro-holmquistite

American Mineralogist Crystal Structure Database Record: [view record]

Leake B E (1978) Nomenclature of amphiboles, American Mineralogist, 63, 1023-1052   [view file]

Leake B E, Woolley A R, Arps C E S, Birch W D, Gilbert M C, Grice J D, Hawthorne F C, Kato A, Kisch H J, Krivovichev V G, Linthout K, Laird J, Mandarino J A, Maresch W V, Nickel E H, Rock N M S, Schumacher J C, Smith D C, Stephenson N C N, Ungaretti L, Whittaker E J W, Youzhi G (1997) Nomenclature of amphiboles: report of the Subcommittee on Amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names, The Canadian Mineralogist, 35, 219-246   [view file]

Burke E A J, Leake B E (2004) "Named amphiboles": a new category of amphiboles recognized by the International Mineralogical Association (IMA), and the proper order of prefixes to be used in amphibole names, The Canadian Mineralogist, 42, 1881-1883   [view file]

Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in BLi amphiboles, American Mineralogist, 90, 1167-1176   [view file]

Hawthorne F C, Oberti R, Harlow G E, Maresch W V, Martin R F, Schumacher J C, Welch M D (2012) Nomenclature of the amphibole supergroup, American Mineralogist, 97, 2031-2048   [view file]