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Ottensite

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Qinglong Mine (Dachang Mine), Dachang Sb ore field, Qinglong Co., Qianxi'nan Autonomous Prefecture, Guizhou Province, China
© Michael Cline

Show Ottensite Photos (15)



Formula:
(Na,K)
 
3
Sb
3+
6
(Sb
3+
 
S
 
3
)O
 
9
 · 3H
 
2
O
System:HexagonalColour:red-brown
Hardness:3½
Name:Named in honour of German mineral dealer and specialist in Chinese minerals Berthold Ottens (born 1942).


Na-dominant analogue of Cetineite

Classification of Ottensite

IMA status:Approved 2006
Strunz 8th edition ID:2/F.11-25
Strunz 9th edition ID:2.FD.15
Nickel-Strunz 10th (pending) edition ID: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 edition ID:2.13.3.2

2 : SULFIDES
13 : Oxysulfides
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Type Occurrence of Ottensite

Type Locality:Qinglong Mine (Dachang Mine), Dachang Sb ore field, Qinglong Co., Qianxi'nan Autonomous Prefecture, Guizhou Province, China
Associated Minerals at type locality:
StibniteMopungiteFluorite

Physical Properties of Ottensite

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

Crystallography of Ottensite

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 Volume:V 969.57 ų
Z:2
Morphology:spherules
X-Ray Powder Diffraction:
d-spacingIntensity
12.29(60)
4.64(51)
4.13(52)
3.406(57)
2.991(77)
2.906(100)
2.679(51)
1.4842(51)

Optical Data of Ottensite

Type:Uniaxial (+)
RI values: n = 1.99
Maximum Birefringence:δ = 0.000

Chart 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 Ottensite

Formula:
(Na,K)
 
3
Sb
3+
6
(Sb
3+
 
S
 
3
)O
 
9
 · 3H
 
2
O
Essential elements:H, Na, O, S, Sb
All elements listed in formula:H, K, Na, O, S, Sb

Relationship of Ottensite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.MA.05Cetineite
(K,Na)
 
6
Sb
3+
12
(Sb
3+
 
S
 
3
)
 
2
O
 
18
(OH)
 
0.5
 · 5,5H
 
2
O
2.MA.10Sarabauite
CaSb
3+
10
S
 
6
O
 
10

Other Names for Ottensite

Synonyms:
IMA2006-014
Other Languages:
German:Ottensit

Other Information

Fluorescence in UV light:Non-fluorescent
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 Ottensite

Reference List:

- +
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 Ottensite

Search Engines:
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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
    • Mineral Dealers:
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  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • rare and unusual minerals mainly crystallized
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    • Localities for Ottensite

    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.
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    (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.
    China
     
    • Guizhou Province
      • Qianxi'nan Autonomous Prefecture
        • Qinglong Co.
          • Dachang Sb ore field
    		http://www.geo.vu.nl/~ima-cnmmn/minerals06-06.pdf
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