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Oswaldpeetersite

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Jomac Mine, White Canyon, White Canyon District, San Juan Co., Utah, USA
© Brent Thorne

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Formula:
(UO
 
2
)
 
2
(CO
 
3
)(OH)
 
2
 · 4H
 
2
O
System:MonoclinicColour:Canary yellow
Lustre:VitreousHardness:2 - 3
Name:After Maurice Oswald Peeters, University of Leuven, Belgium
This page provides mineralogical data about Oswaldpeetersite.

Classification of Oswaldpeetersite

IMA status:Approved 2000
Nickel-Strunz 10th (pending) edition ID:5.EA.20

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
A : UO2:CO3 > 1:1
mindat.org URL:http://www.mindat.org/min-10997.html
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Type Occurrence of Oswaldpeetersite

Type Locality:Jomac Mine, White Canyon, White Canyon District, San Juan Co., Utah, USA

Physical Properties of Oswaldpeetersite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Canary yellow
Streak:Pale yellow
Hardness (Mohs):2 - 3
Hardness Data:Estimated
Fracture:Irregular/Uneven
Density (measured):4.1 - 4.55 g/cm3
Density (calculated):4.55 g/cm3

Crystallography of Oswaldpeetersite

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 = 4.1425Å, b = 14.098Å, c = 18.374Å
β = 103.62°
Ratio:a:b:c = 0.294 : 1 : 1.303
Unit Cell Volume:V 1042.8 ų
Z:4
Morphology:{100}, {010}, {001}, acicular and heavily striated parallel to the length.
Twinning:None mentioned

Optical Data of Oswaldpeetersite

Type:Biaxial (-)
RI values: nα = 1.583 nβ = 1.669 nγ = 1.712
Maximum Birefringence:δ = 0.129

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Oswaldpeetersite

Formula:
(UO
 
2
)
 
2
(CO
 
3
)(OH)
 
2
 · 4H
 
2
O
Essential elements:C, H, O, U
All elements listed in formula:C, H, O, U

Relationship of Oswaldpeetersite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.EA.05UM1997-24-CO:CaCuHU
Ca
 
2
Cu(UO
 
2
)
 
2
(CO
 
3
)
 
2
O
 
3
 · 3H
 
2
O
5.EA.10Urancalcarite
Ca(UO
 
2
)
 
3
(CO
 
3
)(OH)
 
6
 · 3H
 
2
O
5.EA.15Wyartite
CaU
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH) · 7H
 
2
O
5.EA.25Roubaultite
Cu
 
2
(UO
 
2
)
 
3
(OH)
 
10
 · 5H
 
2
O
5.EA.30Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
3
O
 
4
 · 14H
 
2
O
5.EA.35Sharpite
Ca(UO
 
2
)
 
6
(CO
 
3
)
 
5
(OH)
 
4
 · 6H
 
2
O

Other Names for Oswaldpeetersite

Synonyms:
IMA2000-034
Other Languages:
German:Oswaldpeetersit
Spanish:Oswaldpeetersita

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 Oswaldpeetersite

Reference List:

- +
Canadian Mineralogist (2001): 39: 1685-1689.

Internet Links for Oswaldpeetersite

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    • Localities for Oswaldpeetersite

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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
     
    • Utah
      • San Juan Co.
        • White Canyon District
          • White Canyon
    		Can Min (2001) 39, 6, 1685-1689
    Mineral and/or Locality
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