Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Markcooperite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Bird Nest drift, Otto Mountain, Baker, San Bernardino Co., California, USA
© Brent Thorne 2010

Show Markcooperite Photos (13)



Formula:
Pb
 
2
(UO
 
2
)(TeO
 
6
)
System:MonoclinicColour:Orange
Hardness:3
Name:Named in honor of Mr. Mark Cooper, Canadian mineralogist, University of Manitoba.
This page provides mineralogical data about Markcooperite.

Classification of Markcooperite

IMA status:Approved 2009
mindat.org URL:http://www.mindat.org/min-39671.html
Please feel free to link to this page.

Type Occurrence of Markcooperite

Type Locality:Aga Mine, Otto Mountain, Baker, San Bernardino Co., California, USA
General Appearance of Type Material:Pseudotetragonal prisms to 0.2 mm with the forms {100} and {011}, and botryoidal intergrowths to 0.3 mm in diameter. No twinning was observed.
Place of Conservation of Type Material:Natural History Museum of Los Angeles County, catalog numbers 62510, 62511, and 62512 (three co-type specimens).
Geological Setting of type material:Fracture surfaces and small vugs in brecciated quartz veins.
Associated Minerals at type locality:
WulfeniteTimroseiteThorneiteOttoiteKhinite
IodargyriteHousleyiteBromian Chlorargyrite

Physical Properties of Markcooperite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:Orange
Streak:Light orange
Hardness (Mohs):3
Hardness Data:Estimated
Tenacity:Brittle
Cleavage:Perfect
perfect on {100}
Fracture:Irregular/Uneven
Density (calculated):8.496 g/cm3
Comment:Calculation based on the empirical formula.

Crystallography of Markcooperite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 5.7217(16) Å, b = 7.7476(2) Å, c = 7.889(2) Å
β = 90.833(5)°
Ratio:a:b:c = 0.739 : 1 : 1.018
Unit Cell Volume:V 349.7 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
3.501(29)
3.235(100)
2.985(37)
2.873(40)
2.774(30)
2.220(23)
1.990(21)
1.715(22)

Optical Data of Markcooperite

Type:Biaxial (+)
RI values: nα = 2.110 nβ = 2.120 nγ = 2.290
2V:Measured: 30° (5)
Maximum Birefringence:δ = 0.180

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:None observed
Pleochroism:Weak
Comments:Shades of orange, absorption X>Y=Z
Comments:Orientation: X = c, Y = b, Z = a

Chemical Properties of Markcooperite

Formula:
Pb
 
2
(UO
 
2
)(TeO
 
6
)
Essential elements:O, Pb, Te, U
All elements listed in formula:O, Pb, Te, U
Analytical Data:Data in wt.-%, by electron microprobe analysis. Empirical formula based on 8 O and Cl atoms per formula unit.
PbO (50.07)
TeO3 (22.64)
UO3 (25.01)
Cl (0.03)

O=Cl (–0.01)
Empirical Formula:
Pb
 
2.05
U
 
0.80
Te
6+
1.18
O
 
7.99
Cl
 
0.01

Other Names for Markcooperite

Synonyms:
IMA2009-045
Other Languages:

Other Information

Fluorescence in UV light:Not 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 Markcooperite

Reference List:

- +
Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J., and Thorne, B. (2010): Lead-tellurium oxysalts from Otto Mountain near Baker, California: IV. Markcooperite, Pb(UO2)Te6+O6, the first natural uranyl tellurate. American Mineralogist 95, 1554–1559.

Internet Links for Markcooperite

Search Engines:
  • Look for Markcooperite on Google
  • Look for Markcooperite images on Google
    • External Links:
  • Look for Markcooperite on Webmineral
  • Look for Markcooperite on Athena Mineralogy
  • Look for Markcooperite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
    • Mineral Dealers:
  • Find Markcooperite on www.crystalclassics.co.uk
  • Fabre Minerals - search for Markcooperite specimens
  • Buy RARE Minerals from Rocks of Africa
  • Buy from David K Joyce minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Top quality minerals from Kristalle of California
  • rare and unusual minerals mainly crystallized
  • Buy minerals from YourMineralCollection
  • SpiriferMinerals.com - high quality low prices
  • Fine and rare minerals from mintreasure.com
  • Search for Markcooperite on Well-Arranged Molecules
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Markcooperite

    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.
    Hide Locality List
    (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 Bernardino Co.
        • Baker
          • Otto Mountain
    		Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J., and Thorne, B. (2010): American Mineralogist 95, 1554–1559.
    Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J., and Thorne, B. (2010): American Mineralogist 95, 1554–1559.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 3rd May 2013 04:46:34
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds