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Veatchite-1M

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Formula:
Sr2B11O16(OH)5 · H2O
System:
Monoclinic
Colour:
Colourless to white
Lustre:
Vitreous, Pearly
Hardness:
2
Name:
Named as a primitive space-lattice polytype of veachite.
A polytype of Veatchite

Originally named "veatchite-p" or "p-veatchite".

Classification of Veatchite-1M

Discredited 2012
5/K.05-40

5 : Nitrates, Carbonates & Borates
K : Layered borates with complex groups [Bx(O,OH)y]
05 : Volkovskite - Veatchite-A series
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First Recorded Occurrence of Veatchite-1M

Physical Properties of Veatchite-1M

Vitreous, Pearly
Diaphaneity (Transparency):
Transparent
Colour:
Colourless to white
Hardness (Mohs):
2

Crystallography of Veatchite-1M

Crystal System:
Monoclinic

Optical Data of Veatchite-1M

Type:
Biaxial (+)
RI values:
nα = 1.550 nβ = 1.553 nγ = 1.620
2V:
Measured: 25° , Calculated: 26°
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v strong

Chemical Properties of Veatchite-1M

Formula:
Sr2B11O16(OH)5 · H2O
Essential elements:
All elements listed in formula:

Relationship of Veatchite-1M to other Species

5/K.05-10VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
5/K.05-20GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
5/K.05-30VeatchiteSr2B11O16(OH)5 · H2O
5/K.05-50Veatchite-ASr2B11O16(OH)5 · H2O

Other Names for Veatchite-1M

Name in Other Languages:

Other Information

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 Veatchite-1M

Reference List:
Beitr. Mineral. Petrol. (1959): 6: 352.

Clark, Joan R. & M.E. Mrose (1960), Veatchite and p-veatchite: American Mineralogist: 45: 1221-1229.

Clark, Joan R. & C.L. Christ (1971), Veatchite: crystal structure and coordination with p-veatchite: American Mineralogist: 56: 1934-1954.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Grice, J.D. & Pring, A. (2012): Veatchite: Structural relationships of the three polytypes. American Mineralogist, 97, 489-495.

Internet Links for Veatchite-1M

Localities for Veatchite-1M

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Germany
 
  • Lower Saxony
    • Göttingen
      • Reyershausen
Braitsch, O. (1959): Über p-Veatchit, eine neue Veatchit-Varietät aus dem Zechsteinsalz. Beiträge zur Mineralogie und Petrographie 6, 352-356.
  • Thuringia
    • Harz
      • Nordhausen
        • Niedersachswerfen
Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Russia
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Lower Tunguska
          • Nepa River basin
UK
 
  • England
    • North Yorkshire
      • Eskdale
Mineralogical Magazine 1960 32 : 500-501.
USA
 
  • California
    • Inyo Co.
      • Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan area)
        • Ryan
U.S. Geological Survey Photographic Library - http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20BYU%20Mineral%20Specimens%20837
Mineral and/or Locality  
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