Mineralogy Database

Priderite Mineral Data

Search Webmineral :

General Priderite Information

Help on Chemical  Formula: Chemical Formula: (K,Ba)(Ti,Fe+++)8O16
Help on Composition: Composition: Molecular Weight = 715.42 gm
   Potassium   4.92 %  K     5.92 % K2O
   Barium      5.76 %  Ba    6.43 % BaO
   Sodium      0.32 %  Na    0.43 % Na2O
   Titanium   43.50 %  Ti   72.57 % TiO2
   Aluminum    1.13 %  Al    2.14 % Al2O3
   Iron        8.59 %  Fe   12.28 % Fe2O3
   Oxygen     35.78 %  O
             ______        ______ 
             100.00 %       99.78 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.9Ba0.3Na0.1Ti6.5Fe3+1.1Al0.3O16
Help on Environment: Environment: In some ultrapotassic lamproites, ultramafics and carbonatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1951
Help on Locality: Locality: Wolgidee Hills and the Argyle diamond mine, Kimberley District, Western Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Rex Tregilgas Prider (1910-), Professor of Geology, University of Western Australia.
Help on Name Pronunciation: Name Pronunciation: Priderite + Pronunciation Say PRIDERITE
Help on Synonym: Synonym: ICSD 50764
  PDF 6-296

Priderite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Clusters of sub-mm black, opaque crystals of priderite.
Location: Eveslogchorr Mt., Khibiny, Kola, Russia. Scale: 2.5 x 3.4 cm.
© John Veevaert

Priderite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.29317
Help on Cell Dimensions: Cell Dimensions: a = 10.11, c = 2.964, Z = 1; V = 302.96 Den(Calc)= 3.92
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 4/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.2(1), 5.05(0.7), 7.14(0.7),

Physical Properties of Priderite

Help on Cleavage: Cleavage: {001} Perfect, {hk0} Fair
Help on Color: Color: Reddish, Reddish black, Black.
Help on Density: Density: 3.86
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Adamantine
Help on Magnetism: Magnetism: Weakly paramagnetic
Help on Streak: Streak: gray

Optical Properties of Priderite

Help on Dichroism (e): Dichroism (e): black or deep reddish brown.
Help on Dichroism (w): Dichroism (w): deep reddish brown.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.183 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.196 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2806,KPDmeas= 0.285,KC= 0.349
Ncalc = 2.35 - 2.37
Help on Optical Data: Optical Data: Uniaxial (-), w=2.1.

Calculated Properties of Priderite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Priderite =3.86 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEPriderite = 34.90 barns/electron
U=PEPriderite x relectron= 127.49 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 67.14 (Gamma Ray American Petroleum Institute Units)
Concentration of Priderite per GRapi unit = 1.49 (%)

Estimated Radioactivity from Priderite - barely detectable


Priderite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.09)Dana Type
  (07.09.04)Dana Group Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m
Help on  Strunz Class: Strunz Class: 04.DK.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DK -With large (� medium-sized) cations; tunnel structures
04.DK.05 Akaganeite Fe(O,OH,Cl) I2/m 2/m
04.DK.05 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m
04.DK.05 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m
04.DK.05 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m
04.DK.05 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m
04.DK.05 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m
04.DK.05 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m
04.DK.05 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m
04.DK.05 Henrymeyerite! BaFeTi7O16 I 4/m 4/m

Other Priderite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Priderite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Priderite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Priderite :

Ask about Priderite 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 Priderite Specimen Label here :


Dana No: Strunz No: 04.DK.05





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.