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Theoparacelsite

Formula:
Cu
 
3
[(OH)
 
2
|As
 
2
O
 
7
]
System:OrthorhombicColour:Dark pistachio green
Lustre:Adamantine, Vitreous
Name:
For Swiss scientist Paracelse, who was Philippus
Theophrastus van Hohenheim (1493–1541).
This page provides mineralogical data about Theoparacelsite.

Classification of Theoparacelsite

IMA status:Approved 1998
Strunz 8th edition ID:7/B.0-
Nickel-Strunz 10th (pending) edition ID:8.BB.65

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
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Type Occurrence of Theoparacelsite

Type Locality:Roua Mines (Clue de Roua), Daluis, Guillaumes, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France
Place of Conservation of Type Material:Natural History Museum of Geneva, Switzerland
Geological Setting of type material:Oxidation zone.

Physical Properties of Theoparacelsite

Lustre:Adamantine, Vitreous
Diaphaneity (Transparency):Translucent
Colour:Dark pistachio green
Streak:Yellowish-green
Cleavage:Perfect
on {001}
Density (calculated):4.72 g/cm3

Crystallography of Theoparacelsite

Crystal System:Orthorhombic
Cell Parameters:a = 8.3212(8) Å, b = 2.9377(3) Å, c = 4.6644(5) Å
Ratio:a:b:c = 2.833 : 1 : 1.588
Unit Cell Volume:V 114.02 ų (Calculated from Unit Cell)
Morphology:Anhedral grains 0.2 × 0.1 × 0.05 mm, as smaller equidimension
crystals, and as rectangular crystals elongate [010], flattened
{001}, showing {001}, {010}, {100}, {110}, and {101}; also
pulverulent, and as pseudomorphs after olivenite.

Optical Data of Theoparacelsite

Type:Biaxial (+)
RI values: nα = 1.810 nβ = 1.820 nγ = 1.860
2V:Measured: 57° , Calculated: 56°
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v marked
Pleochroism:Visible
Comments:α = light olive green, β = olive green, γ = dark
green.

Chemical Properties of Theoparacelsite

Formula:
Cu
 
3
[(OH)
 
2
|As
 
2
O
 
7
]
Essential elements:As, Cu, H, O
All elements listed in formula:As, Cu, H, O

Relationship of Theoparacelsite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BB.05Amblygonite
LiAl[(F,OH)|PO
 
4
]
8.BB.05Montebrasite
LiAl[(OH,F)|PO
 
4
]
8.BB.05Tavorite
LiFe
3+
 
[OH|PO
 
4
]
8.BB.10Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
[(F,OH)|PO
 
4
]
8.BB.10Zwieselite
(Fe
2+
 
,Mn
2+
 
)
 
2
[F|PO
 
4
]
8.BB.15Sarkinite
Mn
2+
2
[OH|AsO
 
4
]
8.BB.15Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
[OH|PO
 
4
]
8.BB.15Wagnerite
(Mg,Fe
2+
 
)
 
2
[F|PO
 
4
]
8.BB.15Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
[OH|PO
 
4
]
8.BB.15Stanĕkite
Fe
3+
 
(Mn
2+
 
,Fe
2+
 
,Mg)[O|PO
 
4
]
8.BB.15Joosteite
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]O
8.BB.15Hydroxylwagnerite
Mg
 
2
[PO
 
4
](OH)
8.BB.20Holtedahlite
Mg
 
2
[OH|PO
 
4
]
8.BB.20Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
[(OH,O)|PO
 
4
]
8.BB.25Althausite
Mg
 
2
[(OH,F)|PO
 
4
]
8.BB.30Adamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.30Eveite
Mn
2+
2
[OH|AsO
 
4
]
8.BB.30Libethenite
Cu
 
2
[OH|PO
 
4
]
8.BB.30Olivenite
Cu
 
2
[OH|AsO
 
4
]
8.BB.30Zincolibethenite
CuZnPO
 
4
OH
8.BB.30Zincolivenite
CuZn(AsO
 
4
)(OH)
8.BB.30IMA2009-037
Fe
3+
 
Cu
2+
 
AsO
 
4
O
8.BB.35Paradamite
Zn
 
2
[OH|AsO
 
4
]
8.BB.35Tarbuttite
Zn
 
2
[OH|PO
 
4
]
8.BB.40Barbosalite
Fe
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
8.BB.40Hentschelite
CuFe
3+
2
[OH|PO
 
4
]
 
2
8.BB.40Lazulite
(Mg,Fe
2+
 
)Al
 
2
[OH|PO
 
4
]
 
2
8.BB.40Scorzalite
(Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
8.BB.40Wilhelmkleinite
ZnFe
3+
2
[OH|AsO
 
4
]
 
2
8.BB.45Trolleite
Al
 
4
[OH|PO
 
4
]
 
3
8.BB.50Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
8.BB.55Phosphoellenbergerite
Mg
 
14
[(OH)
 
6
|(HPO
 
4
,CO
 
3
)
 
2
|(PO
 
4
)
 
6
]
8.BB.60Urusovite
Cu[AlAsO
 
5
]
8.BB.70Turanite
Cu
 
5
[(OH)
 
2
|VO
 
4
]
 
2
8.BB.75Stoiberite
Cu
 
5
[O
 
2
|(VO
 
4
)
 
2
]
8.BB.80Fingerite
Cu
 
11
[O
 
2
|(VO
 
4
)
 
6
]
8.BB.85Averievite
Cu
 
6
[O
 
2
|Cl
 
2
|(VO
 
4
)
 
2
]
8.BB.90Lipscombite
(Fe
2+
 
,Mn
2+
 
)Fe
3+
2
[OH|PO
 
4
]
 
2
8.BB.90Richellite
Ca
 
3
Fe
3+
10
[(OH,F)
 
3
|(PO
 
4
)
 
2
]
 
4
 · nH
 
2
O (not confirmed)
8.BB.90Zinclipscombite
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2

Other Names for Theoparacelsite

Synonyms:
IMA1998-012
Other Languages:
German:Theoparacelsit
Spanish:Theoparacelsita

Other Information

Other Information:Soluble in HCl.
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 Theoparacelsite

Reference List:Sarp, H. and Cerny R., 2001, Theoparacelsite, Cu3(OH)2As2O7, a new mineral: its description and crystal structure: Arkives de Science Genève: 54(1): 7-14.

American Mineralogist (2002): 87: 356-357.

Internet Links for Theoparacelsite

Search Engines:
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  • Look for Theoparacelsite on Wikipedia
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Theoparacelsite in the Natural History Museum (London) online catalogue
  • Theoparacelsite details from Handbook of Mineralogy (PDF)
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    Localities for Theoparacelsite

    (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.
    France
     
    • Provence-Alpes-Côte d'Azur
      • Alpes-Maritimes
        • Guillaumes
          • Daluis
    		Sarp, H. and Cerny R., 2001, Theoparacelsite, Cu3(OH)2As2O7, a new mineral: its description and crystal structure: Archs Sci. Geneve, 54:7-14.
    Mineral and/or Locality
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