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

Oxy-chromium-dravite

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



Formula:
Na(Cr)
 
3
(Cr
 
4
Mg
 
2
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
System:Trigonal
Member of:Tourmaline Group


The Cr analogue of vanadio-oxy-chromium-dravite.

Classification of Oxy-chromium-dravite

IMA status:Approved 2012
mindat.org URL:http://www.mindat.org/min-42725.html
Please feel free to link to this page.

Type Occurrence of Oxy-chromium-dravite

Type Locality:Pereval Marble Quarry, Slyudyanka (Sludyanka), Lake Baikal area, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia
Place of Conservation of Type Material:Museum of Mineralogy, Earth Sciences Department, Sapienza University of Rome, Rome, Italy, catalogue number 33064

Crystallography of Oxy-chromium-dravite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3m
Space Group Setting:R3m
Cell Parameters:a = 16.0539(7) Å, c = 7.3247(5) Å
Ratio:a:c = 1 : 0.456
Unit Cell Volume:V 1,634.86 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
6.480 (62)
4.634 (24)
4.270 (44)
4.014 (63)
3.542 (50)
3.005 (60)
2.600 (100)
2.063 (47)

Chemical Properties of Oxy-chromium-dravite

Formula:
Na(Cr)
 
3
(Cr
 
4
Mg
 
2
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Essential elements:B, Cr, H, Mg, Na, O, Si
All elements listed in formula:B, Cr, H, Mg, Na, O, Si

Relationship of Oxy-chromium-dravite to other Species

Member of:Tourmaline Group
Other Members of Group:

- +
Chromium-dravite
Na(Mg
 
3
)Cr
3+
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Chromo-alumino-povondraite
Na(Cr
 
3
)(Al
 
4
Mg
 
2
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Darrellhenryite
Na(LiAl
 
2
)Al
 
6
(BO
 
3
)
 
3
Si
 
6
O
 
18
(OH)
 
3
O
Dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Elbaite
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Feruvite
Ca(Fe
2+
 
)
 
3
MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Fluor-buergerite
Na(Fe
3+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
F
Fluor-dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-elbaite
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-feruvite
Ca(Fe
2+
 
)
 
3
MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-liddicoatite
Ca(Li
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-schorl
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-tsilaisite
Na(Mn
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-uvite
Ca(Mg
 
3
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Foitite
(□,Na)(Fe
2+
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
OH
Liddicoatite
Ca(Li
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Luinaite-(OH)
Na(Fe
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Magnesiofoitite
(□,Na)(Mg
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Olenite
Na(Al
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
(OH)
Oxy-dravite
Na(MgAl
 
2
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Oxy-rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Oxy-schorl
Na(Fe
2+
 
Al)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Oxy-vanadium-dravite
Na(V)
 
3
(V
 
4
Mg
 
2
)Si
 
6
O
 
18
(BO
 
3
)
 
3
(OH)
 
3
O
Povondraite
NaFe
3+
3
(Mg
 
2
Fe
3+
4
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Schorl
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Tsilaisite
Na(Mn
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
UM2000-64-SiO:BFeHKMg
K, Mg, Fe, Si, B, O, H
Unnamed (F-analogue of Luinaite-(OH))
Na(Fe
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Unnamed (Pb-dominant Tourmaline)
(Pb,Na)(Li,Al)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(F,OH)
Uvite
Ca(Mg
 
3
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(F/OH)
Vanadio-oxy-chromium-dravite
Na(V)
 
3
(Cr
 
4
Mg
 
2
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Vanadio-oxy-dravite
NaV
 
3
(Al
 
4
Mg
 
2
)(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O

Other Names for Oxy-chromium-dravite

Synonyms:
IMA2011-097
Other Languages:

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 Oxy-chromium-dravite

Reference List:

- +
Bosi, F., Rezeniskii, L. and Skogby, H. (2012) Oxy-chromium-dravite, IMA 2011-097. CNMNC Newsletter, 13(6), 808. Mineralogical Magazine, 76, 807-817.

Best Localities for Oxy-chromium-dravite

Best of Species:Oxy-chromium-dravite

Internet Links for Oxy-chromium-dravite

Search Engines:
  • Look for Oxy-chromium-dravite on Google
  • Look for Oxy-chromium-dravite images on Google
    • External Links:
  • Look for Oxy-chromium-dravite on Webmineral
  • Look for Oxy-chromium-dravite on Athena Mineralogy
  • Look for Oxy-chromium-dravite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
    • Mineral Dealers:
  • Buy fine minerals and gemstones from Pala International
  • The Arkenstone - Fine Minerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Wilensky Fine Minerals
  • Search for Oxy-chromium-dravite on Well-Arranged Molecules
  • Fine and rare minerals from mintreasure.com
  • Search for minerals at Heliodor
  • SpiriferMinerals.com - high quality low prices
  • Fabre Minerals - search for Oxy-chromium-dravite specimens
  • Oxy-chromium-dravite specimens for sale - minfind.com
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Oxy-chromium-dravite

    The 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.
    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.
    Russia
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Lake Baikal area
            • Slyudyanka (Sludyanka)
    		Bosi, F., Rezeniskii, L. and Skogby, H. (2012) Oxy-chromium-dravite, IMA 2011-097. CNMNC Newsletter, 13(6), 808. Mineralogical Magazine, 76, 807-817.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands 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: June 3, 2013 15:27:04
    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