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Orthominasragrite

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Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
© Thomas Witzke

Show Orthominasragrite Photos (7)



Formula:
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
System:OrthorhombicColour:Blue
Lustre:VitreousHardness:1
Member of:Minasragrite Group
This page provides mineralogical data about Orthominasragrite.

Classification of Orthominasragrite

IMA status:Approved 2000
Strunz 8th edition ID:6/D.05-08
Nickel-Strunz 10th (pending) edition ID:7.DB.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
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Type Occurrence of Orthominasragrite

Type Locality:North Mesa Mine group, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
Geological Setting of type material:In a silicified tree - approx 46cm x 30cm
Associated Minerals at type locality:
SulphurPyrite

Physical Properties of Orthominasragrite

Lustre:Vitreous
Colour:Blue
Streak:Pale blue
Hardness (Mohs):1
Hardness Data:Estimated
Cleavage:None Observed
Density (calculated):2 g/cm3

Crystallography of Orthominasragrite

Crystal System:Orthorhombic
Class (H-M):mm2 - Pyramidal
Space Group:Pmn21
Cell Parameters:a = 7.246Å, b = 9.333Å, c = 6.21Å
Ratio:a:b:c = 0.776 : 1 : 0.665
Unit Cell Volume:V 420 ų
Z:2
Twinning:None mentioned
X-Ray Powder Diffraction:
d-spacingIntensity
4.699 (100B)
3.734 (20)
3.622 (20)
3.322 (50)
3.108 (20)
2.865 (40)
2.602 (30)
2.363 (20)
202)(
2.030 (20)

Optical Data of Orthominasragrite

Type:Biaxial (-)
RI values: nα = 1.529 nβ = 1.534 nγ = 1.534
2V:Measured: 2°
Maximum Birefringence:δ = 0.005

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

Chemical Properties of Orthominasragrite

Formula:
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
Essential elements:H, O, S, V
All elements listed in formula:H, O, S, V
Analytical Data:Electron microprobe data (with H2O calculated to give 5H2O)
VO2 (33.88)
SO3 (31.97)
H2O (36.30)

Total: 102.15 wt.%
Empirical Formula:
V
 
1.01
O
 
1.04
(SO
 
4
)
 
0.99
 · 5.00H
 
2
O

Relationship of Orthominasragrite to other Species

Member of:Minasragrite Group
Other Members of Group:

- +
Anorthominasragrite
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
Minasragrite
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.DB.05Aubertite
CuAl(SO
 
4
)
 
2
Cl · 14H
 
2
O
7.DB.05Magnesioaubertite
(Mg,Cu)Al(SO
 
4
)
 
2
Cl · 14H
 
2
O
7.DB.05Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)(SO
 
4
)
 
2
F · 14H
 
2
O
7.DB.10Khademite
Al(SO
 
4
)F · 5H
 
2
O
7.DB.10Rostite
Al(SO
 
4
)(OH) · 5H
 
2
O
7.DB.15Jurbanite
Al(SO
 
4
)(OH) · 5H
 
2
O
7.DB.20Minasragrite
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
7.DB.20Anorthominasragrite
(V
4+
 
O)(SO
 
4
) · 5H
 
2
O
7.DB.25Bobjonesite
(V
4+
 
O)(SO
 
4
) · 3H
 
2
O
7.DB.30Amarantite
Fe
3+
2
(SO
 
4
)
 
2
O · 7H
 
2
O
7.DB.30Hohmannite
Fe
3+
2
(SO
 
4
)
 
2
O · 8H
 
2
O
7.DB.30Metahohmannite
Fe
3+
2
(SO
 
4
)
 
2
O · 4H
 
2
O
7.DB.35Aluminocopiapite
Al
 
2/3
Fe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
7.DB.35Calciocopiapite
CaFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
 · 10H
 
2
O
7.DB.35Copiapite
Fe
2+
 
Fe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
7.DB.35Cuprocopiapite
CuFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
7.DB.35Ferricopiapite
Fe
 
5
(SO
 
4
)
 
6
O(OH) · 20H
 
2
O
7.DB.35Magnesiocopiapite
MgFe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
7.DB.35Zincocopiapite
ZnFe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 18H
 
2
O

Other Names for Orthominasragrite

Synonyms:
IMA2000-018IMA2001-040
Other Languages:
German:Orthominasragrit
Russian:Ортоминасрагрит
Spanish:Orthominasragrita

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 Orthominasragrite

Reference List:

- +
Canadian Mineralogist (2001): 39: 1325-1331.

Internet Links for Orthominasragrite

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    • Localities for Orthominasragrite

    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
     
    • Colorado
      • Montrose Co.
        • Uravan District
    		Analyzed and in the collection of Brent Thorne
    • Utah
      • Emery Co.
        • San Rafael District (San Rafael Swell)
    		Can. Min. 39:1325-1331
            • North Mesa Mine group
    		Patrick Haynes
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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: 21st Jun 2011 19:03:30
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