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Deanesmithite

Big Photo

Clear Creek Claim (Clear Creek Mine), New Idria District, San Benito Co., California, USA
© Knut Eldjarn

Formula:
(Hg-Hg)
2+
 
Hg
2+
3
[O|S
 
2
|CrO
 
4
]
System:TriclinicColour:Red, orange
Hardness:4½ - 5
This page provides mineralogical data about Deanesmithite.

Classification of Deanesmithite

IMA status:Approved 1991
Strunz 8th edition ID:6/F.02-07
Nickel-Strunz 10th (pending) edition ID:7.FB.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
F : Chromates
B : With additional O,V, S, Cl
Dana 7th edition ID:35.4.3.1
Dana 8th edition ID:35.4.3.1

35 : ANHYDROUS CHROMATES
4 : Miscellaneous
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Type Occurrence of Deanesmithite

Type Locality:Clear Creek Claim (Clear Creek Mine), New Idria District, San Benito Co., California, USA

Physical Properties of Deanesmithite

Colour:Red, orange
Streak:Red, orange
Hardness (Mohs):4½ - 5

Crystallography of Deanesmithite

Crystal System:Triclinic
Cell Parameters:a = 8.11Å, b = 9.5Å, c = 6.81Å
α = 100.43°, β = 110.24°, γ = 82.8°
Ratio:a:b:c = 0.854 : 1 : 0.717
Unit Cell Volume:V 483.03 ų (Calculated from Unit Cell)

Chemical Properties of Deanesmithite

Formula:
(Hg-Hg)
2+
 
Hg
2+
3
[O|S
 
2
|CrO
 
4
]
Essential elements:C, S
All elements listed in formula:Cr, Hg, O, S

Relationship of Deanesmithite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.FB.05Phoenicochroite
Pb
 
2
[O|CrO
 
4
]
7.FB.10Santanaite
Pb
 
11
[O
 
12
|CrO
 
4
]
7.FB.15Wattersite
(Hg-Hg)
2+
2
Hg
2+
 
[O
 
2
|CrO
 
4
]
7.FB.25Edoylerite
Hg
2+
3
[S
 
2
|CrO
 
4
]

Other Names for Deanesmithite

Synonyms:
IMA1991-001
Other Languages:
German:Deanesmithit
Russian:Динсмитит
Spanish:Deanesmithita

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 Deanesmithite

Reference List:Canadian Mineralogist (1993): 31: 787-793.

Canadian Mineralogist: 35: 765-772.

Articles/Blogs about Deanesmithite

Internet Links for Deanesmithite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Deanesmithite in the Natural History Museum (London) online catalogue
  • Deanesmithite details from Handbook of Mineralogy (PDF)
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    Localities for Deanesmithite

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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.
    USA
     
    • California
      • San Benito Co.
        • New Idria District
    		Canadian Mineralogist (1993): 31: 787-793.
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