IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Preobrazhenskite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About PreobrazhenskiteHide

Pavel I. Preobrazhenskii
Formula:
Mg3B11O15(OH)9
Colour:
Colourless, lemon-yellow, dark gray
Lustre:
Vitreous
Hardness:
4½ - 5
Specific Gravity:
2.45 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Pavel Ivanovich Preobrazhenskii (Павел Иванович Преображенский) (13 January 1874, Demyansk, Novgorod Province, Russian Empire - 10 September 1944, Moscow, USSR), geologist with the Institute of Halurgy, St. Petersburg, and the Institute of Mining and Chemical Stock, Moscow, Russia and professor in the Department of Geology and Mineralogy, Perm University. He was an expert in Russian salt deposits and was a discoverer of the Inder deposit, Kazakhstan.
This page provides mineralogical data about Preobrazhenskite.


Classification of PreobrazhenskiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1956
6.GB.15

6 : BORATES
G : Heptaborates and other megaborates
B : Phyllo-nonborates, etc.
25.7.1.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Nonaborates
9.2.5

9 : Borates
2 : Borates of Be and Mg

Physical Properties of PreobrazhenskiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless, lemon-yellow, dark gray
Hardness:
4½ - 5 on Mohs scale
Density:
2.45 g/cm3 (Calculated)

Optical Data of PreobrazhenskiteHide

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

Formula:
Mg3B11O15(OH)9

Crystallography of PreobrazhenskiteHide

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

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.28 (100)
3.79 (100)
3.230 (90)
3.187 (90)
2.821 (90)
2.769 (90)
2.641 (90)

Occurrences of PreobrazhenskiteHide

Paragenetic Mode(s):
•  Evaporite

Type Occurrence of PreobrazhenskiteHide

General Appearance of Type Material:
Nodules in fine-grained halite-polyhalite rock and encloses kaliborite and boracite. In places it has been partially replaced by inyoite.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, 1497/1–2,5.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 57015.
Reference:
Yarzhemskii, Ya. Ya. (1956) Preobrazhenskite, a new borate of the saliferous strata of the Inder uplift. Doklady Akademii Nauk SSSR: 111: 1087-1090.

Other Language Names for PreobrazhenskiteHide

Related Minerals - Nickel-Strunz GroupingHide

6.GB.05StudenitsiteNaCa2[B9O14(OH)4] · 2H2OMon.
6.GB.10PenobsquisiteCa2Fe2+[Cl|B9O13(OH)6]Cl · 4H2OMon.
6.GB.20WalkeriteCa16(Mg,Li,◻)2[B13O17(OH)12]4Cl6·28H2OOrth. mm2 : Pba2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.2.1HambergiteBe2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
9.2.2SuaniteMg2[B2O5]Mon.
9.2.3KotoiteMg3[BO3]2Orth. mmm (2/m 2/m 2/m) : Pnnm
9.2.4SzaibélyiteMgBO2(OH)Mon.
9.2.6AksaiteMg[B6O7(OH)6] · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
9.2.7WightmaniteMg5(BO3)O(OH)5 · 2H2OMon.
9.2.8PinnoiteMg[B2O(OH)6]Tet. 4/m : P42/m
9.2.9KurnakoviteMgB3O3(OH)5 · 5H2OTric. 1 : P1
9.2.10HalurgiteMg2[B4O7]2 · 5H2OMon.
9.2.11InderiteMgB3O3(OH)5 · 5H2OMon. 2/m : P21/b
9.2.12HungchaoiteMg(B4O7) · 9H2OTric. 1
9.2.13AdmontiteMgB6O10 · 7H2OMon.
9.2.14McallisteriteMg2[B6O7(OH)6]2 · 9H2OTrig. 3m (3 2/m) : R3c
9.2.15RivadaviteNa6Mg[B6O7(OH)6]4 · 10H2OMon. 2/m : P21/m
9.2.16KaliboriteKMg2H[B6O8(OH)5]2(H2O)4Mon. 2/m : B2/b
9.2.17IquiqueiteK3Na4Mg(CrO4)B24O39(OH) · 12H2OHex.

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 PreobrazhenskiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Yarzhemskii, Ya. Ya. (1956) Preobrazhenskite, a new borate of the saliferous strata of the Inder uplift. Doklady Akademii Nauk SSSR: 111: 1087-1090.
Fleischer, M. (1957) New mineral names. American Mineralogist: 42: 704.
Ostrovskaya, I.V., Nikitna, I.B. (1969) The formula of preobrazhenskite. Tr. Mineral. Muz. Akad. Nauk SSSR: 19: 206-209.
Fleischer, M. (1970) New mineral names. American Mineralogist: 55: 1067-1073.
Burns, P.C., Hawthorne, F.C. (1994) Structure and hydrogen bonding in preobrazenskite, a complex heteropolyhedral borate. Canadian Mineralogist: 32: 387-396.
Grew, E.S., Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Strunz, H. (1997) Classification of borate minerals. European Journal of Mineralogy: 9: 231-235.

Internet Links for PreobrazhenskiteHide

Localities for PreobrazhenskiteHide

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.
Kazakhstan
 
  • Aktobe
    • Aksai Valley
Handbook of Mineralogy Vol V p 6
  • Atyrau
    • Atyrau (Gur'yev)
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30; Pekov, I. V. & Abramov, D. V. (1993): Boron deposit of the Inder and its minerals. World of Stones, 1, 23-30.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 21, 2018 17:43:13 Page generated: August 30, 2018 02:59:08
Go to top of page