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Agaite

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Formula:
Pb3CuTeO5(OH)2(CO3)
System:
Orthorhombic
Colour:
Blue
Name:
For the type locality.
Known from only one specimen.

Classification of Agaite

Approved
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http://www.mindat.org/min-42745.html
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Type Occurrence of Agaite

General Appearance of Type Material:
on quartz
Place of Conservation of Type Material:
Mineral Sciences Department, Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue number 63590

Physical Properties of Agaite

Adamantine
Colour:
Blue
Streak:
Pale blue
Tenacity:
Brittle
Cleavage:
Perfect
on {010}
Fracture:
Irregular/Uneven
Density:
6.987 g/cm3 (Calculated)

Crystallography of Agaite

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pca21
Space Group Setting:
Pca21
Cell Parameters:
a = 10.6522(7) Å, b = 9.1630(5) Å, c = 9.6011(7) Å
Ratio:
a:b:c = 1.163 : 1 : 1.048
Unit Cell Volume:
V 937.12 ų
Z:
4
Morphology:
Blades flattened on {010} and probably elongated on <001>, up to about 20 μm thick and 200 μm in length.
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.26 (28)
4.165 (14)
3.303 (100)
2.747 (68)
2.571 (14)
2.081 (21)
2.031 (17)
1.747 (40)

Optical Data of Agaite

Type:
Biaxial (-)
RI values:
nα = 2.015 nβ = 2.065 nγ = 2.070
2V:
Measured: 34° (5)
Max Birefringence:
δ = 0.055
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Visible
Comments:
X = pale blue, Y and Z = blue; X < Y = Z

Chemical Properties of Agaite

Formula:
Pb3CuTeO5(OH)2(CO3)
Essential elements:
All elements listed in formula:
Analytical Data:
Electron microprobe analyses (average of 4). The empirical formula (based on 10 O apfu)
PbO (65.91)
CuO (7.75)
TeO3 (17.41)
CO2 (4.33) (structure)
H2O (1.78) (structure)
total 97.18 wt%.
Empirical Formula:
Pb3.00Cu2+0.99Te6+1.01O5(OH)2(CO3) ·

Other Names for Agaite

Name in Other Languages:

Other Information

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 Agaite

Reference List:
Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J. (2012) Agaite, IMA 2011-115. CNMNC Newsletter No. 13, June 2012, page 812; Mineralogical Magazine, 76, 807-817.

Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J. (2013): Lead-tellurium oxysalts from Otto Mountain near Baker, California: IX. Agaite, Pb3Cu2+Te6+O5(OH)2(CO3), a new mineral with CuO5-TeO6 polyhedral sheets. American Mineralogist, 98, 512–517

Internet Links for Agaite

Localities for Agaite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • California
    • San Bernardino Co.
      • Baker
        • Otto Mountain
Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J. (2013): Lead-tellurium oxysalts from Otto Mountain near Baker, California: IX. Agaite, Pb3Cu2+Te6+O5(OH)2(CO3), a new mineral with CuO5-TeO6 polyhedral sheets. American Mineralogist, 98, 512–517
Mineral and/or Locality  
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