Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Preobrazhenskite

Big Photo

Inder B deposit and salt dome, Atyrau (Gur'yev), Atyrau Oblysy (Atyrau Oblast'), Kazakhstan
© Sergey Vasiliev

Show Preobrazhenskite Photos (3)
Formula:
Mg
 
3
B
 
11
O
 
15
(OH)
 
9
System:OrthorhombicColour:Colourless, ...
This page provides mineralogical data about Preobrazhenskite.

Classification of Preobrazhenskite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/K.08-10
Nickel-Strunz 10th (pending) edition ID:6.GB.15

6 : BORATES
G : Heptaborates and other megaborates
B : Phyllo-nonborates, etc.
Dana 8th edition ID:25.7.1.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Nonaborates
Hey's CIM Ref.:9.2.5

9 : Borates
2 : Borates of Be and Mg
mindat.org URL:http://www.mindat.org/min-3280.html
Please feel free to link to this page.

Type Occurrence of Preobrazhenskite

Type Locality:Inder B deposit and salt dome, Atyrau (Gur'yev), Atyrau Oblysy (Atyrau Oblast'), Kazakhstan
Year of Discovery:1956

Physical Properties of Preobrazhenskite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless, lemon-yellow, dark gray

Crystallography of Preobrazhenskite

Crystal System:Orthorhombic
Cell Parameters:a = 16.33Å, b = 9.16Å, c = 10.59Å
Ratio:a:b:c = 1.783 : 1 : 1.156
Unit Cell Volume:V 1,584.08 ų (Calculated from Unit Cell)

Optical Data of Preobrazhenskite

Type:Biaxial (+)
RI values: nα = 1.573 - 1.576 nβ = 1.573 - 1.576 nγ = 1.594 - 1.596
Maximum Birefringence:δ = 0.021

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:relatively strong

Chemical Properties of Preobrazhenskite

Formula:
Mg
 
3
B
 
11
O
 
15
(OH)
 
9
Essential elements:B, H, Mg, O
All elements listed in formula:B, H, Mg, O

Relationship of Preobrazhenskite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.GB.05Studenitsite
NaCa
 
2
[B
 
9
O
 
14
(OH)
 
4
]·2H
 
2
O
6.GB.10Penobsquisite
Ca
 
2
Fe
2+
 
[Cl|B
 
9
O
 
13
(OH)
 
6
]Cl · 4H
 
2
O
6.GB.20Walkerite
Ca
 
16
(Mg,Li,[])
 
2
[B
 
13
O
 
17
(OH)
 
12
]
 
4
Cl
 
6
·28H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
9.2.1Hambergite
Be
 
2
[O|OH|BO
 
2
]
9.2.2Suanite
Mg
 
2
[B
 
2
O
 
5
]
9.2.3Kotoite
Mg
 
3
[BO
 
3
]
 
2
9.2.4Szaibélyite
Mg
 
2
[(OH)(B
 
2
O
 
4
(OH))]
9.2.6Aksaite
Mg[B
 
6
O
 
7
(OH)
 
6
] · 2H
 
2
O
9.2.7Wightmanite
Mg
 
5
[O|(OH)
 
5
|BO
 
3
] · 2H
 
2
O
9.2.8Pinnoite
Mg[B
 
2
O(OH)
 
6
]
9.2.9Kurnakovite
Mg(H
 
4
B
 
3
O
 
7
)(OH) · 5H
 
2
O
9.2.10Halurgite
Mg
 
2
[B
 
4
O
 
7
]
 
2
 · 5H
 
2
O
9.2.11Inderite
Mg(H
 
4
B
 
3
O
 
7
)(OH) · 5H
 
2
O
9.2.12Hungchaoite
Mg[B
 
4
O
 
7
] · 9H
 
2
O
9.2.13Admontite
Mg[B
 
6
O
 
7
(OH)
 
6
] · 4H
 
2
O
9.2.14Mcallisterite
Mg
 
2
[B
 
6
O
 
7
(OH)
 
6
]
 
2
 · 9H
 
2
O
9.2.15Rivadavite
Na
 
6
Mg[B
 
6
O
 
7
(OH)
 
6
]
 
4
 · 10H
 
2
O
9.2.16Kaliborite
KMg
 
2
H[B
 
6
O
 
8
(OH)
 
5
]
 
2
(H
 
2
O)
 
4
9.2.17Iquiqueite
K
 
3
Na
 
4
Mg(CrO
 
4
)B
 
24
O
 
39
(OH)·12H
 
2
O

Other Names for Preobrazhenskite

Other Languages:
German:Preobrazhenskit
Russian:Преображенскит
Spanish:Preobrazhenskita

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 Preobrazhenskite

Reference List:American Mineralogist (1957): 42: 704.

American Mineralogist (1970): 55: 1071.

Burns, P.C. and Hawthorne, F.C. (1994b) Structure and hydrogen bonding in preobrazenskite, a complex heteropolyhedral borate. Canadian Mineralogist (1994): 32: 387-396.

European Journal of Mineralogy (1997): 9: 231.

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

Internet Links for Preobrazhenskite

Search Engines:
  • Look for Preobrazhenskite on Google
  • Look for Preobrazhenskite images on Google
    • External Links:
  • Look for Preobrazhenskite on Webmineral
  • Look for Preobrazhenskite on Athena Mineralogy
  • Look for Preobrazhenskite on Wikipedia
  • Look for Preobrazhenskite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Preobrazhenskite in the Natural History Museum (London) online catalogue
  • Preobrazhenskite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fine Minerals from Dan Weinrich Minerals
  • The Arkenstone - Fine Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Wilensky Fine Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Find Preobrazhenskite on www.crystalclassics.co.uk
  • Buy minerals from Mineralium.com
  • Top quality minerals from Kristalle of California
  • rare and unusual minerals mainly crystallized
  • Fabre Minerals - search for Preobrazhenskite specimens
  • Edwards Minerals - Fine Specimens
  • Search for - Preobrazhenskite - on e-Rocks Mineral Sales & Auctions
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Preobrazhenskite

    (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.
    Kazakhstan
     
    • Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast')
      • Aksai Valley
    		Handbook of Mineralogy Vol V p 6
    • Atyrau Oblysy (Atyrau Oblast')
      • Atyrau (Gur'yev)
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 3rd Nov 2009 22:04:28