Important Update News

The RRUFF Project (rruff.info) 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.

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

Holtite R061049

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 2386 of 4216  


Name: Holtite
RRUFF ID: R061049
Ideal Chemistry: (Ta0.60.4)Al6BSi3O18
Locality: Kola Peninsula, U.S.S.R.
Source: Michael Scott S100998 [view label]
Owner: RRUFF
Description: Blocky crystals; as pseudohexagonal elongated needles, light buff to cream-buff or deep olive-buff in color. Crystals are twinned by a 2-fold rotation around [010].
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Dumortierite (5) ]
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: R061049
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R061049.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 4.6918(8)Å    b: 11.880(3)Å    c: 20.372(5)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1135.5(2)Å3    Crystal System: orthorhombic
  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.

X Min:    X Max:    X Sort:
REFERENCES for Holtite

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]

Pryce M W (1971) Holtite: a new mineral allied to dumortierite, Mineralogical Magazine, 38, 21-25   [view file]

Fleischer M (1972) New mineral names, American Mineralogist, 57, 1552-1561   [view file]

Hoskins B F, Mumme W G, Pryce M W (1989) Holtite, (Si2.25Sb0.75)B[Al6(Al0.43Ta0.270.30)O15(O,OH)2.25]: crystal structure and crystal chemistry, Mineralogical Magazine, 53, 457-463   [view file]

Jambor J L, Grew E S (1990) New mineral names, American Mineralogist, 75, 931-937   [view file]

Kazantsev S S, Pushcharovsky D Y, Pasero M, Merlino S, Zubkova N V, Kabalov Y K ,Voloshin A V (2005) Crystal structure of holtite I, Crystallography Reports, 50, 42-47

Kazantsev S S, Zubkova N V, Voloshin A V (2006) Refinement of composition and structure of holtite I, Crystallography Reports, 51, 412-413

Locock A J, Piilonen P C, Ercit T S, Rowe R (2006) New mineral names, American Mineralogist, 91, 216-224   [view file]

Zubkova N V, Pushcharovskii P Y, Kabalov Y K, Kazantsev S S, Voloshin A V (2006) Crystal structure of holtite II, Crystallography Reports, 51, 16-22   [view file]

Groat L A, Grew E S, Evans R J, Pieczka A, Ercit T S (2009) The crystal chemistry of holtite, Mineralogical Magazine, 73, 1033-1050   [view file]

Evans R J, Fyfe C A, Groat L A, Lam A E (2012) MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite, American Mineralogist, 97, 329-340   [view file]

Evans R J, Groat L A (2012) Structure and topology of dumortierite and dumortierite-like materials, The Canadian Mineralogist, 50, 1197-1231   [view file]

Groat L A, Evans R J, Grew E S, Pieczka A (2012) The crystal chemistry of As- and Sb-bearing dumortierite, The Canadian Mineralogist, 50, 855-872   [view file]

Pieczka A, Evans R J, Grew E S, Groat L A, Ma C, Rossman G R (2013) The dumortierite supergroup. I. A new nomenclature for the dumortierite and holtite groups, Mineralogical Magazine, 77, 2825-2839   [view file]