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Bluebellite

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About BluebelliteHide

Formula:
Cu6[(I5+O3)(OH)3](OH)7Cl
Colour:
Bright bluish-green
Lustre:
Adamantine
Hardness:
1
Specific Gravity:
4.746 (Calculated)
Crystal System:
Trigonal
Name:
Named by S.J. Mills, A.R. Kampf, A.G. Christy, R.M. Housley, G.R. Rossman, R.E. Reynolds, and J. Marty in 2014 for the type locality of the Blue Bell claims/mine. The exact type locality is the D shaft at the Blue Bell claims.
Structurally related to mojaveite (IMA2013-120). Unique combination of elements. One of three currently known copper iodate minerals beside bellingerite and salesite.

The structure is based on Cu6MX14 brucite-like layers, with M and X in bluebellite being I and (O,OH,Cl), respectively.



Classification of BluebelliteHide

Approved
Approval Year:
2013
First Published:
2014

Physical Properties of BluebelliteHide

Adamantine
Comment:
appears often dull because of surface roughness
Colour:
Bright bluish-green
Streak:
Pale bluish green
Hardness:
Comment:
very soft, ~1
Tenacity:
Sectile
Cleavage:
Perfect
on {001}
Fracture:
Irregular/Uneven
Density:
4.746 g/cm3 (Calculated)
Comment:
couldn't be measured

Optical Data of BluebelliteHide

Type:
Uniaxial (-)
RI values:
n = 1.96
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
Dispersion:
n value is average and estimated (couldn't be measured directly)
Pleochroism:
Visible
Comments:
O (bluish green) >> E (nearly colourless)

Chemical Properties of BluebelliteHide

Formula:
Cu6[(I5+O3)(OH)3](OH)7Cl
IMA Formula:
Cu6(IO3)(OH)10Cl

Crystallography of BluebelliteHide

Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Cell Parameters:
a = 8.3017(5) Å, c = 13.259(1) Å
Ratio:
a:c = 1 : 1.597
Unit Cell V:
791.4 ų
Z:
3
Morphology:
Plates or flakes up to ~20 × 20 × 5 μm in size, usually curved.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.427(99)
2.664(35)
2.516(100)
2.213(9)
2.103(29)
1.8990(47)
1.5663(48)
1.4788(29)
Comments:
very similar to mojaveite

Type Occurrence of BluebelliteHide

Place of Conservation of Type Material:
Cotype material is deposited in the collections of the mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA, catalogue numbers 64083 to 64090
Geological Setting of Type Material:
In a highly siliceous hornfels
Associated Minerals at Type Locality:

Synonyms of BluebelliteHide

Fluorescence of BluebelliteHide

Non-fluorescent

Other InformationHide

Notes:
Raman bands [cm-1]: iodate-related bands at 680, 611, 254 (all strong)
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 BluebelliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mills, S.J., Kampf, A.R., Christy, A.G., Housley, R.M., Rossman, G.R., Reynolds, R.R. (2014) Bluebellite, IMA 2013- 121. CNMNC Newsletter No. 20, June 2014, page 550. Mineralogical Magazine: 78: 549-558.
Mills, S.J., Kampf, A.R., Christy, A.G., Housley, R.M., Rossman, G.R., Reynolds, R.E., Marty, J. (2014) Bluebellite and mojaveite, two new minerals from the central Mojave Desert, California, USA. Mineralogical Magazine: 78: 1325-1340.
Belakovskiy, D.I., Uvarova, Y., Gagne, O.C. (2016) New mineral names. American Mineralogist: 101: 1012-1019.

Internet Links for BluebelliteHide

Localities for BluebelliteHide

ⓘ - 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.
USA (TL)
 
  • California
    • San Bernardino Co.
      • Silver Lake District
        • Soda Mts
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
Mills, S.J., Kampf, A.R., Christy, A.G., Housley, R.M., Rossman, G.R. and Reynolds, R.R. (2014) Bluebellite, IMA 2013- 121. CNMNC Newsletter No. 20, June 2014, page 550; Mineralogical Magazine, 78, 549-558; Mills, S.J., Kampf, A.R., Christy, A.G., Housley, R.M., Rossman, G.R., Reynolds, R.E., Marty, J. (2014): Bluebellite and mojaveite, two new minerals from the central Mojave Desert, California, USA. Mineralogical Magazine, 78, 1325-1340.
Mineral and/or Locality  
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