Radovanite Mineral Data
General Radovanite Information
Chemical Formula:
Cu2Fe+++(AsO4)[As+++O2(OH)2]•H2O
Composition:
Molecular Weight = 575.94 gm
Iron 8.73 % Fe 12.48 % Fe2 O3
Copper 20.96 % Cu 23.60 % Cu2 O
Arsenic 39.03 % As 34.35 % As2 O3 / 19.95 % As2 O5
Hydrogen 0.73 % H 6.49 % H2 O
Oxygen 30.56 % O
______ ______
100.00 % 96.87 % = TOTAL OXIDE
Empirical Formula:
Cu1.9 Fe3+ 0.9 AsAs2 H4.15 O11
Environment:
Secondary mineral associated with other arsenates. New-structure type.
IMA Status:
Approved IMA 2002 (Dana # Added)
Locality:
Roua copper deposit in the upper part of the Var Valley (Dalius gorge), Alpes-Maritimes, France. Link to MinDat.org Location Data.
Name Origin:
Named for Radovan Cerny (1957-), crystallographer at the University of Geneva, Switzerland.
Synonym:
IMA2000-001
Radovanite Crystallography
Axial Ratios:
a:b:c =0.7292:1:0.6154
Cell Dimensions:
a = 9.585, b = 13.143, c = 8.0884, Z = 4; V = 1,018.94 Den(Calc)= 3.75
Crystal System:
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
X Ray Diffraction:
By Intensity(I/Io ): 3.09(1)(202), 6.179(0.9)(101), 3.241(0.4)(122), 2.214(0.25)(251,223), 2.71(0.25)(240,321), 6.88(0.25)(001), 2.551(0.2)(042), 3.871(0.2)(220),
Physical Properties of Radovanite
Cleavage:
None
Color:
Pistachio green.
Density:
3.9
Diaphaneity:
Transparent
Fracture:
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Luster:
Vitreous (Glassy)
Streak:
green
Optical Properties of Radovanite
Gladstone-Dale:
CI meas = 0.07 (Fair) - where the CI = (1-KPDmeas /KC ) CI calc = 0.032 (Excellent) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2222,KPDmeas = 0.2137,KC = 0.2296 Ncalc = 1.86 - 1.9
Optical Data:
Biaxial (-), a=1.8, b=1.84, g=1.86, bire=0.0600
Calculated Properties of Radovanite
Electron Density:
Bulk Density (Electron Density)=3.51 gm/cc note: Specific Gravity of Radovanite =3.75 gm/cc.
Fermion Index:
Fermion Index = 0.0019978875 Boson Index = 0.9980021125
Photoelectric:
PERadovanite = 39.11 barns/electronU=PERadovanite x r Electron Density= 137.35 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Radovanite is Not Radioactive
Radovanite Classification
Dana Class:
42.02.06.01 (42) Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.02) where (AB)3 (XO4) Zq � x(H2O)
(42.02.06) Dana Group
42.02.06.01 Radovanite ! Cu2Fe(AsO4)[AsO2(OH)2]•H2O P nma 2/m 2/m 2/m
Strunz Class:
08.CB.40 08 - PHOSPHATES, ARSENATES, VANADATES
08.C - Phosphates without Additional Anions, with H2O
08.CB -With only medium-sized cations, RO4:H2O = 1:1
08.CB.40 Radovanite ! Cu2Fe(AsO4)[AsO2(OH)2]•H2O P nma 2/m 2/m 2/m
Other Radovanite Information
References:
NAME( AmMin, v 88, p 1177) PHYS. PROP.(AmMin, v 88, p 1177) OPTIC PROP.(AmMin, v 88, p 1177)
See Also:
Links to other databases for Radovanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Radovanite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Radovanite :
Ask about Radovanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Radovanite Specimen Label here :
Radovanite
Cu2Fe+++(AsO4)[As+++O2(OH)2]•H2O
Dana No: 42.02.06.01 Strunz No: 08.CB.40
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.