Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Pseudosinhalite

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

Stubenberg Quarry, Stubenberg am See, Weiz, Styria, Austria
© Franz Bernhard

Show Pseudosinhalite Photos (2)



Formula:
Mg
 
2
Al
 
3
(BO
 
3
)
 
2
(OH)O
 
3
System:MonoclinicColour:Colourless
Lustre:Vitreous
Name:The name alludes to the optical, chemical, and structural similarity to Sinhalite
This page provides mineralogical data about Pseudosinhalite.

Classification of Pseudosinhalite

IMA status:Approved 1997
Strunz 8th edition ID:5/G.07-12
Nickel-Strunz 10th (pending) edition ID:6.AC.10

6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
mindat.org URL:http://www.mindat.org/min-7257.html
Please feel free to link to this page.

Type Occurrence of Pseudosinhalite

Type Locality:Tayezhnoe (Tayozhnoye) Fe-B skarn, Aldan Shield, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia

Physical Properties of Pseudosinhalite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless

Crystallography of Pseudosinhalite

Crystal System:Monoclinic

Optical Data of Pseudosinhalite

Type:Biaxial (-)
RI values: nα = 1.691 nβ = 1.713 nγ = 1.730
Maximum Birefringence:δ = 0.039

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v or r < v

Chemical Properties of Pseudosinhalite

Formula:
Mg
 
2
Al
 
3
(BO
 
3
)
 
2
(OH)O
 
3
Essential elements:Al, B, H, Mg, O
All elements listed in formula:Al, B, H, Mg, O

Relationship of Pseudosinhalite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.AC.05Sinhalite
MgAl(BO
 
4
)
6.AC.15Behierite
(Ta
5+
 
,Nb
5+
 
)(BO
 
4
)
6.AC.15Schiavinatoite
(Nb,Ta)(BO
 
4
)
6.AC.20Frolovite
Ca[B(OH)
 
4
]
 
2
6.AC.25Hexahydroborite
Ca[B(OH)
 
4
]
 
2
 · 6H
 
2
O
6.AC.30Henmilite
Ca
 
2
Cu[B(OH)
 
4
]
 
2
(OH)
 
4
6.AC.35Bandylite
Cu[B(OH)
 
4
]Cl
6.AC.40Teepleite
Na
 
2
[B(OH)
 
4
]Cl
6.AC.45Moydite-(Y)
Y[B(OH)
 
4
](CO
 
3
)
6.AC.50Carboborite
Ca
 
2
Mg[B(OH)
 
4
]
 
2
(CO
 
3
)
 
2
 · 4H
 
2
O
6.AC.55Sulfoborite
Mg
 
3
[B(OH)
 
4
]
 
2
(SO
 
4
)(OH,F)
 
2
6.AC.60Lüneburgite
Mg
 
3
[B
 
2
(OH)
 
6
](PO
 
4
)
 
2
 · 6H
 
2
O
6.AC.65Seamanite
Mn
2+
3
[B(OH)
 
4
](PO
 
4
)(OH)
 
2
6.AC.70Cahnite
Ca
 
2
[B(OH)
 
4
](AsO
 
4
)

Other Names for Pseudosinhalite

Synonyms:
IMA1997-014
Other Languages:
German:Pseudosinhalit
Russian:Псевдосинхалит
Spanish:Pseudosinhalita

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 Pseudosinhalite

Reference List:

- +
Daniels, P., Krosse, S., Werding, G., and Schreyer, W. (1997) "Pseudosinhalite", a new hydrous MgAl-borate: synthesis, phase characterization, crystal structure, and P-T stability. Contributions to Mineralogy and Petrology: 128: 261-271.

Schreyer, W., Pertsev, N.N., Medenbach, O., Burchard, M., Dettmar, D. (1998) Pseudosinhalite: discovery of the hydrous MgAl-borate as a new mineral in the Tayozhnoye, Siberia, skarn deposit. Contributions to Mineralogy and Petrology (1998): 133: 382-388.

Strunz, H. and Nickel, E. (2000) Pseudosinhalite is a structural isotype of chondrodite. American Mineralogist: 85: 1828-1829.

Daniels, P. and Schreyer, W. (2001) Comments on: Strunz and Nickel: "Pseudosinhalite is a structural isotype of chondrodite." American Mineralogist: 86: 583-584.

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

Internet Links for Pseudosinhalite

Search Engines:
  • Look for Pseudosinhalite on Google
  • Look for Pseudosinhalite images on Google
    • External Links:
  • Look for Pseudosinhalite on Webmineral
  • Look for Pseudosinhalite on Athena Mineralogy
  • Look for Pseudosinhalite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Pseudosinhalite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Buy fine minerals and gemstones from Pala International
  • Buy RARE Minerals from Rocks of Africa
  • High-end worldwide specimens & outstanding customer service
  • Buy from David K Joyce minerals
  • SpiriferMinerals.com - high quality low prices
  • By minerals from YourMineralCollection
  • webminerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Search for minerals at Heliodor
  • Search for - Pseudosinhalite - on e-Rocks Mineral Sales & Auctions
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fabre Minerals - search for Pseudosinhalite specimens
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Pseudosinhalite

    Hide Locality List
    (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.
    Austria
     
    • Styria
      • Weiz
        • Stubenberg am See
    		Bernhard, F. et al. (2008)
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Aldan Shield
    		Schreyer et al (1998), Contributions to Mineralogy and Petrology: 133: 382-388.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the 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 hundreds 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: 6th Nov 2011 18:42:49
    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