| |
 |
Calderonite Mineral Data
|
|
|
General Calderonite Information
|
 Chemical Formula: |
Pb2Fe+++(VO4)2(OH) |
| Composition: |
Molecular Weight = 711.73 gm |
| |
Vanadium 13.60 % V 24.28 % V2O5 |
| |
Iron 7.06 % Fe 10.10 % Fe2O3 |
| |
Copper 0.45 % Cu 0.56 % CuO |
| |
Hydrogen 0.21 % H 1.90 % H2O |
| |
Lead 58.22 % Pb 62.72 % PbO |
| |
Oxygen 20.46 % O |
| |
______ ______ |
| |
100.00 % 99.55 % = TOTAL OXIDE |
| Empirical Formula: |
Pb2Fe3+0.9Cu0.05(VO4)1.9(OH)1.5 |
| Environment: |
Upper oxidation zone of a Pb-Zn hydrothermal deposit. (Mn-free brackebuschite) |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Santa Marta and Azuaga, Badajoz province, Spain Link to MinDat.org Location Data. |
| Name Origin: |
Named for Salvador Caleron (1852-1911) in recognition of his important contribution to the mineralogy of Spain. |
| Synonym: |
Ferribrackebushite |
| |
IMA2001-022 |
| |
Calderonite Image |
|
Images:
|
|
Calderonite
Comments: Secondary electron image showing a cluster of prismatic calderonite crystals. (AmMin, 88:1704).
Location: Santa Marta, Badajoz province, Spain.
Scale: See Image.
© American Mineralogist |
|
Calderonite Crystallography
|
| Axial Ratios: |
a:b:c =1.2516:1:1.4591 |
| Cell Dimensions: |
a = 7.66, b = 6.12, c = 8.93, Z = 2; beta = 112° V = 388.15 Den(Calc)= 6.09 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.242(1)(211), 2.746(0.48)(003), 2.98(0.48)(103),4.893(0.43)(011), 4.166(0.34)(002), 3.058(0.25)(020), 2.449(0.2)(022), |
| |
Physical Properties of Calderonite
|
| Color: |
Reddish orange, Reddish brown. |
| Diaphaneity: |
Semitransparent-translucent |
| Fracture: |
Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende). |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
3-4 - Calcite-Fluorite |
| Luster: |
Vitreous - Adamantine |
| Streak: |
red orange |
| |
Optical Properties of Calderonite
|
| Gladstone-Dale: |
CI calc= 0.12 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1806,KC= 0.2052
Ncalc = 2.25 |
| Optical Data: |
Biaxial (+), b=2.1 |
| |
Calculated Properties of Calderonite
|
| Electron Density: |
Bulk Density (Electron Density)=5.25 gm/cc
note: Specific Gravity of Calderonite =6.09 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PECalderonite =1,042.08 barns/electron
U=PECalderonite x rElectron Density=5,472.11 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Calderonite is Not Radioactive |
| |
Calderonite Classification
|
| Dana Class: |
40.02.08.04 (40)Hydrated Phosphates, etc |
| |
(40.02)where A++ (B++)2 (XO4) � x(H2O) |
| |
(40.02.08)Brackebushite Group |
| |
40.02.08.01 Brackebuschite Pb2(Mn,Fe)(VO4)2(OH) P 21/m 2/m |
| |
40.02.08.02 Arsenbrackebuschite Pb2(Fe,Zn)(AsO4)2•(H2O) P 21/m 2/m |
| |
40.02.08.03 Feinglosite! Pb2(Zn,Fe)[(As,S)O4]2•(H2O) P 21,P 21/m Mono |
| |
40.02.08.04 Calderonite! Pb2Fe(VO4)2(OH) P 21/m 2/m |
| |
40.02.08.05 Bushmakinite! Pb2Al(PO4)(VO4)(OH) P 21/m 2/m |
| Strunz Class: |
08.BG.05 08 - PHOSPHATES, ARSENATES, VANADATES |
| |
08.B - Phosphates, etc. with Additional Anions, without H2O |
| |
08.BG -With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1 |
| |
08.BG.05 Arsenbrackebuschite Pb2(Fe,Zn)(AsO4)2•(H2O) P 21/m 2/m |
| |
08.BG.05 Bearthite Ca2Al(PO4)2(OH) P 21/m 2/m |
| |
08.BG.05 Arsentsumebite Pb2Cu(AsO4)(SO4)(OH) P 21/m 2/m |
| |
08.BG.05 Brackebuschite Pb2(Mn,Fe)(VO4)2(OH) P 21/m 2/m |
| |
08.BG.05 Feinglosite! Pb2(Zn,Fe)[(As,S)O4]2•(H2O) P 21,P 21/m Mono |
| |
08.BG.05 Gamagarite Ba2(Fe,Mn)(VO4)2(OH) P 21/m 2/m |
| |
08.BG.05 Goedkenite (Sr,Ca)2Al(PO4)2(OH) P 21/m 2/m |
| |
08.BG.05 Tsumebite Pb2Cu(PO4)(SO4)(OH) P 21/m 2/m |
| |
08.BG.05 Calderonite! Pb2Fe(VO4)2(OH) P 21/m 2/m |
| |
08.BG.05 Bushmakinite! Pb2Al(PO4)(VO4)(OH) P 21/m 2/m |
| |
08.BG.05 Tokyoite! Ba2Mn(VO4)2(OH) P 21/m 2/m |
| |
Other Calderonite Information
|
| References: |
NAME( AmMin, v 88, p 1703) PHYS. PROP.(AmMin, v 88, p 1703) OPTIC PROP.(AmMin, v 88, p 1703) |
| See Also: |
Links to other databases for Calderonite :
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 Calderonite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Calderonite :
Ask about Calderonite 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
Español
Print or Cut-and-Paste your Calderonite Specimen Label here :
|
Calderonite
Pb2Fe+++(VO4)2(OH)
Dana No: 40.02.08.04 Strunz No: 08.BG.05
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.