Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

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

Niobophyllite R110048
Name: Niobophyllite
RRUFF ID: R110048
Ideal Chemistry: K2NaFe2+7(Nb,Ti)2(Si4O12)2O2(OH)4(O,F)
Locality: Mount Malosa, Zomba District, Malawi
Source: Donald M Doell [view label]
Owner: RRUFF
Description: Brown tabular platy crystals associated with quartz
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Groups: [ astrophyllite (11) ] [ Astrophyllite (5) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary 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: R110048
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R110048.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.354(2)Å    b: 11.836(4)Å    c: 11.622(5)Å
alpha: 113.03(2)°    beta: 94.47(2)°    gamma: 103.27(2)°   Volume: 648.0(2)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 Niobophyllite

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]

Nickel E H, Rowland J F, Charette D J (1964) Niobophyllite – the niobium analogue of astrophyllite; a new mineral from Seal Lake, Labrador, The Canadian Mineralogist, 8, 40-52   [view file]

Fleischer M, Mandarino J A, Strunz H, Cech F (1965) New mineral names, American Mineralogist, 50, 261-268   [view file]

Piilonen P C, LaLonde A E, McDonald A M, Gault R A, Larsen A O (2003) Insights into astrophyllite–group minerals. I. Nomenclature, composition and development of a standardized general formula, The Canadian Mineralogist, 41, 1-26   [view file]

Piilonen P C, McDonald A M, LaLonde A E (2003) Insights into astrophyllite–group minerals. II. Crystal chemistry, The Canadian Mineralogist, 41, 27-54   [view file]

Cámara F, Sokolova E, Abdu Y, Hawthorne F C (2010) The crystal structures of niobophyllite, kupletskite-(Cs) and Sn-rich astrophyllite: Revisions to the crystal chemistry of the astrophyllite-group minerals, The Canadian Mineralogist, 48, 1-16   [view file]

Cámara F, Sokolova E, Abdu Y, Hawthorne F C (2010) The crystal structures of niobophyllite, kupletskite-(Cs) and Sn-rich astrophyllite: Revisions to the crystal chemistry of the astrophyllite-group minerals: Erratum, The Canadian Mineralogist, 48, 431-431   [view file]

Sokolova E (2012) Further developments in the structure topology of the astrophyllite-group minerals, Mineralogical Magazine, 76, 863-882   [view file]

Sokolova E, Cámara F, Hawthorne F C, Ciriotti M E (2017) The astrophyllite supergroup: nomenclature and classification, Mineralogical Magazine, 81, 143-153