Beraunite Mineral Data

Beraunite Mineral Data +

[What's New] [Mineral Galleries] [Sale Items] [About Us] [Contacts]
At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide

General Beraunite Information

Chemical Formula:

Fe++Fe+++5(PO4)4(OH)5·4(H2O)

Composition:

Molecular Weight = 872.07 gm

Iron 38.42 % Fe 8.24 % FeO / 45.78 % Fe₂O₃

Phosphorus 14.21 % P 32.55 % P₂O₅

Hydrogen 1.50 % H 13.43 % H₂O

Oxygen 45.87 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺Fe³⁺₅(PO₄)₄(OH)₅·4(H₂O)

Environment:

A component of bog iron ores; a cement in clays, sands, and bone material; an alteration product of triphylite in granite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1841

Locality:

Many localities are known; some with well-studied material include: in the Hrbek mine, Svata Dobrotiva (St. Benigna), near Beroun, Czech Republic. In Germany, from the Eleonore and Rot Link to MinDat.org Location Data.

Name Origin:

For its occurrence near Beroun (formerly Beraun), Czech Republic.

Synonym:

ICSD 203096

Oxyberaunite

PDF 22-631

Beraunite Image

Images:

Beraunite

Comments: Green and reddish brown, beraunite aggregates.
Location: Arean Claim, Three Oak Gap, Mena, Polk County, Arkansas, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Beraunite Crystallography

Axial Ratios:

a:b:c =4.0253:1:3.7459

Cell Dimensions:

a = 20.646, b = 5.129, c = 19.213, Z = 4; beta = 93.34° V = 2,031.07 Den(Calc)= 2.85

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 10.37(1), 3.082(0.6), 4.825(0.6),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 1 1 1] [ 1 0 0] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Marzoni Fecia di Cossato Y , Orlandi P , Pasero M , The Canadian Mineralogist , 27 (1989) p.441-446, Manganese-bearing beraunite from Mangualde, Portugal: mineral data, and structure refinement, Locality: Mangualde, Portugal

Physical Properties of Beraunite

Cleavage:

[100] Good

Color:

Green, Greenish brown, Gray green, Dark greenish brown, Dark red.

Density:

2.9

Diaphaniety:

Translucent

Habit:

Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.

Habit:

Globular - Spherical, or nearly so, rounded forms (e.g. wavellite).

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Dull

Streak:

green brown

Optical Properties of Beraunite

Optical Data:

Biaxial (+), a=1.775, b=1.786, g=1.815, bire=0.0400, 2V(Calc)=66, 2V(Meas)=30-60. Dispersion relatively weak.

Calculated Properties of Beraunite

Electron Density:

r_electron=2.80 gm/cc
note: r_Beraunite=2.85 gm/cc.

Fermion Index

Fermion Index = 0.00836
Boson Index = 0.99164

Photoelectric:

PE_Beraunite= 12.09 barns/electron
U=PE_Beraunite x r_electron= 33.91 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Beraunite is Not Radioactive

Beraunite Classification

Dana Class:

42.11.16.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.16)Dana Group

42.11.16.1 Beraunite FeFe5(PO4)4(OH)5·4(H2O) C 2/c 2/m

Strunz Class:

VII/D.11-70 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe

VII/D.11 - Strunzite series

VII/D.11-10 Ferrostrunzite FeFe2(PO4)2(OH)2·6(H2O) P 1,P1 Tri

VII/D.11-20 Strunzite MnFe2(PO4)2(OH)2·6(H2O) P1 1

VII/D.11-30 Ferristrunzite FeFe2(PO4)2(OH)3·5(H2O) P1,P 1 Tri

VII/D.11-40 Bermanite MnMn2(PO4)2(OH)2·4(H2O) P 2₁ 2

VII/D.11-50 Cacoxenite (Fe,Al)25(PO4)17O6(OH)12·75(H2O) P 6/mmm 6/m 2/m 2/m

VII/D.11-60 Tinticite Fe5(PO4,VO4)4·7(H2O) P1 1

VII/D.11-70 Beraunite FeFe5(PO4)4(OH)5·4(H2O) C 2/c 2/m

VII/D.11-71 Oxiberaunite* (Fe,Mn)Fe5(PO4)4O(OH)4·6(H2O) Mono

VII/D.11-90 Souzalite (Mg,Fe)3(Al,Fe)4(PO4)4(OH)6·2(H2O) P1,P 1 Tri

VII/D.11-100 Gormanite Fe3Al4(PO4)4(OH)6·2(H2O) P1,P 1 Tri

VII/D.11-110 Dufrenite FeFe4(PO4)3(OH)5·2(H2O) C 2/c 2/m

VII/D.11-120 Burangaite (Na,Ca)2(Fe,Mg)2Al10(PO4)8(OH,O)12·4(H2O) C 2/c 2/m

VII/D.11-130 Natrodufrenite Na(Fe,Fe)(Fe,Al)5(PO4)4(OH)6·2(H2O) C 2/c 2/m

VII/D.11-135 Ercitite! Na(Mn,Fe)(PO4)(OH)·2(H2O) P 2₁/n 2/m

VII/D.11-140 Kidwellite Na(Fe,Cu)9x(PO4)6(OH)11·3(H2O) P 2/c 2/m

VII/D.11-150 Meurigite! KFe7(PO4)5(OH)7·8(H2O) C 2,Cm,C 2/m Mono

Other Beraunite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Search for Beraunite using:

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

Visit our Advertisers for Beraunite :

AA Mineral Specimens

B & L Fine Minerals

Crystal Vaults

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Beraunite Mineral Data :

Ask about Beraunite 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 Beraunite Specimen Label here :

Beraunite

Fe++Fe+++5(PO4)4(OH)5·4(H2O)
Dana No: 42.11.16.1 Strunz No: VII/D.11-70
Locality:

Notes: