Plimerite Mineral Data

General Plimerite Information

Chemical Formula:

ZnFe+++4(PO4)3(OH)5

Composition:

Molecular Weight = 658.73 gm

Zinc 9.93 % Zn 12.36 % ZnO

Iron 33.91 % Fe 48.48 % Fe₂O₃

Phosphorus 14.11 % P 32.32 % P₂O₅

Hydrogen 0.77 % H 6.84 % H₂O

Oxygen 41.29 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

ZnFe³⁺₄(PO₄)₃(OH)₅

Environment:

Rockbridgeite group. Zn-analogue of rockbridgeite and frondelite.

IMA Status:

Proposed IMA 2008 (Dana # Added)

Locality:

Broken Hill, New South Wales, Australia Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals, Nomenclature and Classification (CNMNC)

Synonym:

IMA2008-013

Plimerite Image

Images:

Plimerite

Comments: Light olive green to dark green hemispheres and crusts of plimerite. From Author's study material.
Location: Broken Hill, Yancowinna Co, New South Wales, Australia. Scale: Size: Miniature.
© Tom Loomis / Dakota Matrix

Plimerite Crystallography

Axial Ratios:

a:b:c =0.3722:1:1.2104

Cell Dimensions:

a = 5.141, b = 13.811, c = 16.718, Z = 4; V = 1,187.02 Den(Calc)= 3.69

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.168(1), 2.575(0.9), 2.414(0.75),2.753(0.6), 3.369(0.55), 2.4(0.5), 3.388(0.5), 4.638(0.5),

Optical Properties of Plimerite

Optical Data:

NCalc= 1.94 - from Gladstone-Dale relationship (KC = 0.2546) where Ncalc=Dcalc*KC+1

Calculated Properties of Plimerite

Electron Density:

Bulk Density (Electron Density)=3.59 gm/cc
note: Specific Gravity of Plimerite =3.69 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Plimerite= 15.75 barns/electron
U=PE_Plimerite x rElectron Density= 56.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Plimerite is Not Radioactive

Plimerite Classification

Dana Class:

41.09.02.03 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.09)where (A B)5 (XO4)3 Zq

(41.09.02)Rockbridgeite Group

41.09.02.01 Rockbridgeite (Fe,Mn)Fe4(PO4)3(OH)5 Bbmm 2/m 2/m 2/m

41.09.02.02 Frondelite MnFe4(PO4)3(OH)5 Bbmm 2/m 2/m 2/m

41.09.02.03 Plimerite! ZnFe4(PO4)3(OH)5 C mcm 2/m 2/m 2/m

Strunz Class:

08.BC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BC -With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1

08.BC.10 Frondelite MnFe4(PO4)3(OH)5 Bbmm 2/m 2/m 2/m

08.BC.10 Rockbridgeite (Fe,Mn)Fe4(PO4)3(OH)5 Bbmm 2/m 2/m 2/m

08.BC.10 Plimerite! ZnFe4(PO4)3(OH)5 C mcm 2/m 2/m 2/m

Other Plimerite Information

See Also:

Links to other databases for Plimerite :
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 Plimerite using:

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Ask about Plimerite 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 Plimerite Specimen Label here :

Plimerite

ZnFe+++4(PO4)3(OH)5
Dana No: 41.09.02.03 Strunz No: 08.BC.10
Locality:

Notes: