IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Markcooperite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About MarkcooperiteHide

Mark Cooper
Formula:
Pb2(UO2)(TeO6)
Colour:
Orange
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
8.496 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Mr. Mark Cooper, Canadian mineralogist, University of Manitoba.
The unique feature of the mineral, not observed in any other species, is U-Te diadochy substitution.


Classification of MarkcooperiteHide

Approved
Approval Year:
2009

Physical Properties of MarkcooperiteHide

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

Optical Data of MarkcooperiteHide

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

Formula:
Pb2(UO2)(TeO6)
IMA Formula:
Pb2(UO2)TeO6

Crystallography of MarkcooperiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
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 V:
349.7 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
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)

Type Occurrence of MarkcooperiteHide

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:

Synonyms of MarkcooperiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Housleyite12 photos of Markcooperite associated with Housleyite on mindat.org.
Ottoite7 photos of Markcooperite associated with Ottoite on mindat.org.
Eckhardite4 photos of Markcooperite associated with Eckhardite on mindat.org.
Quartz2 photos of Markcooperite associated with Quartz on mindat.org.
Timroseite1 photo of Markcooperite associated with Timroseite on mindat.org.
Chlorargyrite1 photo of Markcooperite associated with Chlorargyrite on mindat.org.
Calcite1 photo of Markcooperite associated with Calcite on mindat.org.
Khinite1 photo of Markcooperite associated with Khinite on mindat.org.

Fluorescence of MarkcooperiteHide

Not fluorescent.

Other InformationHide

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 MarkcooperiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 MarkcooperiteHide

Localities for MarkcooperiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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
          • Baker
            • Otto Mountain
Kampf, A. R., Mills, S. J., Housley, R. M., Marty, J. & Thorne, B. (2010) Lead-tellurium oxysalts from Otto Mountain near Baker, California: IV. Markcooperite, Pb2(UO2)TeO6, the first natural uranyl tellurate. American Mineralogist, 95(10), 1554–1559.
Kampf, A. R., Mills, S. J., Housley, R. M., Marty, J. & Thorne, B. (2010) Lead-tellurium oxysalts from Otto Mountain near Baker, California: IV. Markcooperite, Pb2(UO2)TeO6, the first natural uranyl tellurate. American Mineralogist, 95(10), 1554–1559.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 15, 2018 14:55:27 Page generated: September 13, 2018 04:22:57
Go to top of page