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Ottensite

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About OttensiteHide

04260610015054732326563.jpg
Berthold Ottens
Formula:
(Na,K)3Sb3+6(Sb3+S3)O9 · 3H2O
Colour:
red-brown
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.14 (Calculated)
Crystal System:
Hexagonal
Name:
Named in honour of German mineral dealer and specialist in Chinese minerals Berthold Ottens (born 1942).
Na-dominant analogue of cetineite.


Classification of OttensiteHide

Approved
Approval Year:
2006
2.MA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
M : Oxysulfosalts
A : Oxysulfosalts of Alkalies and Alkali Earths
2.13.3.2

2 : SULFIDES
13 : Oxysulfides

Physical Properties of OttensiteHide

Vitreous
Transparency:
Translucent
Colour:
red-brown
Streak:
yellow-brown
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.14 g/cm3 (Calculated)

Optical Data of OttensiteHide

Type:
Uniaxial (+)
RI values:
n = 1.99
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Weak
Comments:
Orange-red
Red
Comments:
n from Gladstone-Dale calculation.

Chemical Properties of OttensiteHide

Formula:
(Na,K)3Sb3+6(Sb3+S3)O9 · 3H2O
IMA Formula:
Na3(Sb2O3)3(SbS3) · 3H2O

Crystallography of OttensiteHide

Crystal System:
Hexagonal
Class (H-M):
6 - Pyramidal
Space Group:
P63
Cell Parameters:
a = 14.1758(2) Å, c = 5.5712(1) Å
Ratio:
a:c = 1 : 0.393
Unit Cell V:
969.57 ų
Z:
2
Morphology:
spherules

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.29Å(60)
4.64Å(51)
4.13Å(52)
3.406Å(57)
2.991Å(77)
2.906Å(100)
2.679Å(51)
1.4842Å(51)

Type Occurrence of OttensiteHide

Synonyms of OttensiteHide

Other Language Names for OttensiteHide

German:Ottensit

Common AssociatesHide

Associated Minerals Based on Photo Data:
11 photos of Ottensite associated with StibniteSb2S3
1 photo of Ottensite associated with StibiconiteSb3+Sb5+2O6(OH)

Related Minerals - Nickel-Strunz GroupingHide

2.MA.05Cetineite(K,Na)6Sb3+12(Sb3+S3)2O18(OH)0.5 · 5,5H2OHex. 6 : P63
2.MA.10SarabauiteCaSb3+10S6O10Mon. 2/m : B2/b

Related Minerals - Dana Grouping (8th Ed.)Hide

2.13.3.1Cetineite(K,Na)6Sb3+12(Sb3+S3)2O18(OH)0.5 · 5,5H2OHex. 6 : P63

Fluorescence of OttensiteHide

Non-fluorescent

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 OttensiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
J. Sejkora & J. Hyrsl (2007) "Ottensite, a new mineral from Qinglong, Guizhou Province, China." Mineralogical Record 38:77-81.
M.J.Origlieri, T.A. Laetsch & R.T.Downs (2007): A note on the paragenesis of ottensite," Mineralogical Record 38:83-84.

Internet Links for OttensiteHide

Localities for OttensiteHide

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.
China (TL)
 
  • Guizhou
    • Qianxinan
      • Qinglong County
        • Dachang Sb ore field
http://www.geo.vu.nl/~ima-cnmmn/minerals06-06.pdf
Italy
 
  • Tuscany
    • Grosseto Province
      • Scansano
        • Pereta
http://www.researchgate.net/publication/261724326_OTTENSITE_BRIZZIITE_E_MOPUNGITE_DELLA_MINIERA_DI_PERETA_%28TOSCANA%29; Bittarello E., Cámara F., Ciriotti M. E., Zaccaria G., Piva P. (2014): Ottensite, brizziite e mopungite della miniera di Pereta (Toscana). GMT 2014 Giornate Mineralogiche di Tavagnasco, 6-8 giugno 2014. Plinius, 40, 174; Bittarello, E., Cámara, F., Ciriotti, M.E., Marengo, A. (2015): Ottensite, brizziite and mopungite from Pereta mine (Tuscany, Italy): New occurrences and crystal structure refinement of mopungite. Mineralogy and Petrology, 109, 431-442.
 
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