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Ottensite

A valid IMA mineral species
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00896930017272471111221.jpg
Ottensite

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
01227160017272002501606.jpg
Ottensite, etc.

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
07399620017747269685569.jpg
Ottensite, etc.

Dushan County, Qiannan, Guizhou, China
00534450017864942579753.jpg
Ottensite

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
01227160017272002501606.jpg
Ottensite, etc.

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
08331190017706462998228.jpg
Ottensite, etc.

Dushan County, Qiannan, Guizhou, China
00896930017272471111221.jpg
Ottensite

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
01227160017272002501606.jpg
Ottensite, etc.

Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
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About OttensiteHide

07663710017272471129703.jpg
Berthold Ottens
Formula:
(Na,K)3Sb3+6(Sb3+S3)O9 · 3H2O
Colour:
Red-brown
Lustre:
Vitreous
Hardness:
3½
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.


Unique IdentifiersHide

Mindat ID:
29259
Long-form identifier:
mindat:1:1:29259:1

IMA Classification of OttensiteHide

IMA status:
Approved
IMA Formula:
Na3(Sb3+2O3)3(Sb3+S2-3)·3H2O
Approval year:
2006
First published:
2007
Type description reference:
Hyrsl, Jaroslav, Sejkora, Jiri (2007) Ottensite: a new mineral from Qinglong, Guizhou Province, China. The Mineralogical Record, 38 (1) 77-81

Classification of OttensiteHide

Strunz-mindat (2026):
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
Dana 8th ed.:
2.13.3.2

2 : SULFIDES
13 : Oxysulfides

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
OtsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of OttensiteHide

Lustre:
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
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Pleochroism:
Weak
Comments:
Orange-red
Red
Comments:
n from Gladstone-Dale calculation.

Chemistry of OttensiteHide

Mindat Formula:
(Na,K)3Sb3+6(Sb3+S3)O9 · 3H2O
Element Weights:
Element% weight
Sb70.120 %
O15.795 %
S7.914 %
Na5.674 %
H0.498 %

Calculated from ideal end-member formula.
Sb
O
S
Na
H
Elements listed:
H, K, Na, O, S, Sb - search for minerals with similar chemistry

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

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001145OttensiteSabelli C, Nakai I, Katsura S (1988) Crystal structures of cetineite and its synthetic Na analogue Na3.6(Sb2O3)3(SbS3)(OH)0.6.2.4(H2O) American Mineralogist 73 398-40419880293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.29 Å(60)
4.64 Å(51)
4.13 Å(52)
3.406 Å(57)
2.991 Å(77)
2.906 Å(100)
2.679 Å(51)
1.4842 Å(51)
Locality:
Qinglong Mine (Dachang Mine), Dachang Sb ore field, Qinglong County, Qianxinan, Guizhou, China
Reference:
Hyrsl, Jaroslav, Sejkora, Jiri (2007) Ottensite: a new mineral from Qinglong, Guizhou Province, China. The Mineralogical Record, 38 (1) 77-81

Geological EnvironmentHide

Type Occurrence of OttensiteHide

Type Locality:
ⓘ Qinglong Mine (Dachang Mine), Dachang Sb ore field, Qinglong County, Qianxinan, Guizhou, China
General Appearance of Type Material:
Botryoidal crusts 1 mm thick on stibnite.
Place of Conservation of Type Material:
National Museum, Prague, Czech Republic (P1p 1/2006).
Geological Setting of Type Material:
Volcano-sedimentary deposit.
Associated Minerals at Type Locality:
FluoriteStibnite
Reference:
Hyrsl, Jaroslav, Sejkora, Jiri (2007) Ottensite: a new mineral from Qinglong, Guizhou Province, China. The Mineralogical Record, 38 (1) 77-81

Synonyms of OttensiteHide

Other Language Names for OttensiteHide

Dutch:Ottensiet
German:Ottensit

Common AssociatesHide

Associations Based on Photo Data:
29 photos of Ottensite associated with StibniteSb2S3
4 photos of Ottensite associated with StibiconiteSb3+Sb5+2O6(OH)
3 photos of Ottensite associated with MopungiteNa[Sb5+(OH)6]
2 photos of Ottensite associated with CalciteCaCO3
2 photos of Ottensite associated with QuartzSiO2
1 photo of Ottensite associated with FluoriteCaF2

Related Minerals - Strunz-mindat 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
2.MA.15CafeositeCa4Fe2+3Fe3+2◻O6S4Orth. mmm(2/m2/m2/m) : Pcca
2.MA.20ThionasiliteNa2Si2S2O3Orth. mm2 : Aba2

Fluorescence of OttensiteHide

In UV light:
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.

Internet Links for OttensiteHide

References for OttensiteHide

Localities for OttensiteHide

Showing 3 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Guizhou
    • Qiannan
Hercule Shen
    • Qianxinan
      • Qinglong County
        • Dachang Sb ore field
www.geo.vu.nl (n.d.)
Italy
 
  • Tuscany
    • Grosseto Province
      • Scansano
www.researchgate.net (n.d.) +2 other references
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