Important Update News

The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.

We are grateful to NASA for the funding of this effort.

Hilgardite R070426

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 1 of 2  


Name: Hilgardite
RRUFF ID: R070426
Ideal Chemistry: Ca2B5O9Cl·H2O
Locality: Boulby mine, Loftus, Cleveland, England, UK
Source: Michael Scott S102875 [view label]
Owner: RRUFF
Description: Pink to orange poorly formed crystals scattered over a pale green boracite matrix, polytype 1A
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Hilgardite (2) ]
Quick search: [ All Hilgardite samples (2) ]
CHEMISTRY 
RRUFF ID: R070426.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca2.00B5O9(Cl0.95(OH)0.05)Σ=1·H2O ; = darker. Trace amounts of Na ; OH by difference 1-Cl; gray: Ca2.00(B4.98Al0.01Fe3+0.01)Σ=5O9Cl1.00·H2O; traces of Na; B estimated by 5-Al-Fe; light: boracite
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070426
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R070426.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 6.454(1)Å    b: 6.561(1)Å    c: 6.293(1)Å
alpha: 61.567(9)°    beta: 118.728(9)°    gamma: 105.85(1)°   Volume: 205.20(7)Å3    Crystal System: triclinic
  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.

DOWNLOADS:

DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
X Min:    X Max:    X Sort:
REFERENCES for Hilgardite

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]

Hurlbut C S, Taylor R E (1937) Hilgardite, a new mineral species from Choctaw Salt Dome, Louisiana, American Mineralogist, 22, 1052-1057   [view file]

Kondrat'eva V V (1964) X-ray diffraction studies of some minerals of the hilgardite group, Rentgenografia Mineral'nogo Syr'ia, Moscow ('Nedra'), 4, 10-18   [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]

Rumanova I M, Iorysh Z I, Belov N V (1977) Crystal structure of triclinic chilgardite Ca2[B5O9]Cl·H2O = Ca2[B3±B2ΔO9]Cl·H2O, Soviet Physics - Doklady, 22, 460-462   [view file]

Ghose S (1985) A new nomenclature for the borate minerals in the hilgardite (Ca2B5O9Cl·H2O) - tyretskite (Ca2B5O9OH·H2O) group, American Mineralogist, 70, 636-637   [view file]

Nickel E H (1993) Standardization of polytype suffixes, Mineralogical Magazine, 57, 756-756   [view file]

Burns P C, Hawthorne F C (1994) Refinement of the structure of hilgardite-1A, Acta Crystallographica, C50, 653-655

Grice J D, Gault R A, Van Velthuizen J (2005) Borate minerals of the Penobsquis and Millstream deposits, southern New Brunswick, Canada, The Canadian Mineralogist, 43, 1469-1487   [view file]

Grice J D, Rowe R (2014) Hilgardite polytype distribution in Sussex, New Brunswick evaporite deposits, Mineralogical Magazine, 78, 235-252