Priderite Mineral Data

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Priderite Information

Chemical Formula:

(K,Ba)(Ti,Fe+++)8O16

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

Empirical Formula:

K_0.9Ba_0.3Na_0.1Ti_6.5Fe³⁺_1.1Al_0.3O₁₆

Environment:

In some ultrapotassic lamproites, ultramafics and carbonatites.

IMA Status:

Valid Species (Pre-IMA) 1951

Locality:

Wolgidee Hills and the Argyle diamond mine, Kimberley District, Western Australia. Link to MinDat.org Location Data.

Name Origin:

Named for Rex Tregilgas Prider (1910-), Professor of Geology, University of Western Australia.

Name Pronunciation:

Priderite + Pronunciation

Synonym:

ICSD 50764

PDF 6-296

Priderite Image

Images:

Priderite

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

Axial Ratios:

a:c = 1:0.29317

Cell Dimensions:

a = 10.11, c = 2.964, Z = 1; V = 302.96 Den(Calc)= 3.92

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4/m

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

By Intensity(I/I_o): 3.2(1), 5.05(0.7), 7.14(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Post J E , Von Dreele R B , Buseck P R , Acta Crystallographica, Section B , 38 (1982) p.1056-1065, Symmetry and cation displacements in hollandites:, structure refinements of hollandite, cryptomelane and priderite, Locality: West Kimberley, Australia, Note: Anisotropic displacement factors from ICSD

Physical Properties of Priderite

Cleavage:

{001} Perfect, {hk0} Fair

Color:

Reddish, Reddish black, Black.

Density:

3.86

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

7 - Quartz

Luster:

Adamantine

Magnetism:

Weakly paramagnetic

Streak:

gray

Optical Properties of Priderite

Dichroism (e):

black or deep reddish brown.

Dichroism (w):

deep reddish brown.

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

Optical Data:

Uniaxial (-), w=2.1.

Calculated Properties of Priderite

Electron Density:

Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Priderite =3.86 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Priderite= 34.90 barns/electron
U=PE_Priderite x r_electron= 127.49 barns/cc.

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

Dana Class:

07.09.04.01 (07)Multiple Oxides

(07.09)Dana Type

(07.09.04)Dana Group

07.09.04.01 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m

07.09.04.02 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m

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

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

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 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Priderite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Priderite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Priderite Mineral Data :

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 Español

Print or Cut-and-Paste your Priderite Specimen Label here :

Priderite

(K,Ba)(Ti,Fe+++)8O16
Dana No: 07.09.04.01 Strunz No: 04.DK.05
Locality:

Notes: