Mindat Logo

Natromontebrasite

This page is currently not sponsored. Click here to sponsor this page.



Colour:Usually white, also pale ...Lustre:Sub-Vitreous, Resinous, Waxy, Dull
Hardness:5½ - 6
Member of:Amblygonite Group
Name:Named in 1911 by Waldemar T. Schaller for the chemical composition: Natro- (sodian) and for the mineral's similarity to montebrasite. discredited as a mixture in 2007 by Andre M. Fransolet, F. Fontan, and Ph. de Parseval.
A Mixture Of:Amblygonite, Lacroixite, Wardite


Masses of white mineral

Classification of Natromontebrasite

IMA status:Discredited 2007
Explanation of status:Species and name natromontebrasite are discredited because natromontebrasite is a mixture of montebrasite (OH-rich) with lacroixite and subordinate wardite (IMA No. 05-E ).
Dana 8th edition ID:41.5.8.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
mindat.org URL:http://www.mindat.org/min-2857.html
Please feel free to link to this page.

Physical Properties of Natromontebrasite

Lustre:Sub-Vitreous, Resinous, Waxy, Dull
Diaphaneity (Transparency):Translucent
Colour:Usually white, also pale yellow, pink, pale green
Streak:White
Hardness (Mohs):5½ - 6
Tenacity:Brittle
Cleavage:Perfect
Perfect on {100}, good on {110}, distinct on {011}, and on {001}, imperfect. (Frequently fine-grained)
Fracture:Irregular/Uneven
Density (measured):3.085 g/cm3

Relationship of Natromontebrasite to other Species

Member of:Amblygonite Group
Other Members of Group:

- +
Amblygonite
LiAl(PO
 
4
)F
Montebrasite
LiAl(PO
 
4
)(OH)
Tavorite
LiFe
3+
 
(PO
 
4
)(OH)

Other Names for Natromontebrasite

Synonyms:
FremontiteNatramblygonite
Other Languages:
German:Natromontebrasit
Natronamblygonit
Simplified Chinese:叶双晶石
Spanish:Natromontebrasita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Natromontebrasite

Reference List:

- +
Schaller, Waldemar Theodore (1911) American Journal of Science: 31: 48 (as Natramblygonite).
Gonnard (1913) Bulletin de la Société française de Minéralogie: 36: 120.
Schaller, Waldemar T. (1914) Journal of the Washington Academy of Science: 4: 354 (as Fremontite).
Schaller, Waldemar T. (1916) U.S. geological Survey Bull. 610: 141 (as Fremontite).
Mineralogical Magazine (1916): 17: 350 (as Fremontite).
American Mineralogist (1951): 36: 823-827.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 823.
Fransolet, A.-M., Fontan, F., de Parseval, Ph. (2007): Natromontebrasite, a discredited mineral species. Canadian Mineralogist, 45, 391-396.

Internet Links for Natromontebrasite

Search Engines:
  • Look for Natromontebrasite on Google
  • Look for Natromontebrasite images on Google
  • External Links:
  • Natromontebrasite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Buy from Dave Bunk Minerals
  • Buy rare minerals from Excalibur Minerals
  • Buy fine minerals and gemstones from Pala International
  • Lapis Mineral Magazin
  • The Arkenstone - Fine Minerals
  • Fine and rare minerals from mintreasure.com
  • Fine minerals from bisbeeborn.com
  • Fine Minerals from Weinrich Minerals, Inc.
  • rare and unusual minerals mainly crystallized
  • Natromontebrasite specimens for sale - minfind.com
  • Buy from McDougall Minerals
  • Localities for Natromontebrasite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Fujian Province
      • Nanping Prefecture
        • Yanping District
          • Nanping pegmatite field (Xikeng pegmatite field)
    Yueqing Yang, Yunxiang Ni, Yongquan Guo, Nianming Qiu, Chenghu Chen, Chaofa Cai, Yaping Zhang, Jiabing Liu, and Yuexian Chen (1987): Mineral Deposits 6(3), 10-21
    Rwanda
     
    • Western Province
      • Gatumba District
    Mineralogical Magazine 1963 33 : 613-615; Daltry, V.D.C. and O. von Knorring (1998) Type-Mineralogy of Rwanda with Particular Reference to the Buranga Pegmatite. Geologica Belgica 1:1-9
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • Breage
    No reference listed
    USA
     
    • Colorado
      • Fremont Co.
        • Eight Mile Park pegmatite District
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 826; "Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997
    Minerals of Colorado (1997) E.B. Eckels
    "Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997; Rocks & Min. (2007) 82:237
    • Connecticut
      • Middlesex Co.
        • Portland
          • Collins Hill
            • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
    Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy.
    • Maine
      • Oxford Co.
        • Paris
    King, V. T. and Foord, E. E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, pp. 418 + 88 plates.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: November 25, 2014 23:49:21
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds