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Natromontebrasite

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Colour:
Usually white, also pale yellow, pink, pale green
Lustre:
Sub-Vitreous, Resinous, Waxy, Dull
Hardness:
5½ - 6
Specific Gravity:
3.085
Crystal System:
Triclinic
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.
Masses of white mineral


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Classification of NatromontebrasiteHide

Discredited
41.5.8.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq

Physical Properties of NatromontebrasiteHide

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

Crystallography of NatromontebrasiteHide

Crystal System:
Triclinic

Synonyms of NatromontebrasiteHide

Other Language Names for NatromontebrasiteHide

Relationship of Natromontebrasite to other SpeciesHide

Other Members of this group:
AmblygoniteLiAl(PO4)FTric. 1 : P1
MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1
TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

41.5.8.1AmblygoniteLiAl(PO4)FTric. 1 : P1
41.5.8.2MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1

Other InformationHide

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

References for NatromontebrasiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 NatromontebrasiteHide

Localities for NatromontebrasiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
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
Portugal
 
  • Castelo Branco District
    • Idanha-a-Nova
      • Segura
Neiva, A. M. R., Silva, M. M. V. G., Antunes, I. M. H. R., & Ramos, J. M. F. (2000). Phosphate minerals of some granitic rocks associated quartz veins from northern and central Portugal.
  • Guarda District
    • Guarda
Neiva, A. M. R., Silva, M. M. V. G., Antunes, I. M. H. R., & Ramos, J. M. F. (2000). Phosphate minerals of some granitic rocks associated quartz veins from northern and central Portugal.
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  
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