Scorzalite Mineral Data

General Scorzalite Information

Chemical Formula:

(Fe++,Mg)Al2(PO4)2(OH)2

Composition:

Molecular Weight = 325.88 gm

Magnesium 1.86 % Mg 3.09 % MgO

Aluminum 16.56 % Al 31.29 % Al₂O₃

Iron 12.85 % Fe 16.54 % FeO

Phosphorus 19.01 % P 43.56 % P₂O₅

Hydrogen 0.62 % H 5.53 % H₂O

Oxygen 49.10 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_0.75Mg_0.25Al₂(PO₄)₂(OH)₂

Environment:

Highly aluminous metamorphic rocks and granitic pegmatites. Forms a series with lazulite.

IMA Status:

Valid Species (Pre-IMA) 1947

Locality:

Corrego Firo pegmatite, Minas Gerias, Brazil. Link to MinDat.org Location Data.

Name Origin:

Named for Everisto Pena Scorza (1899-?), Brazilian mineralogist, Mineral Survey of Brazil.

Name Pronunciation:

Scorzalite + Pronunciation

Synonym:

ICSD 26497

PDF 35-632

Scorzalite Image

Images:

Scorzalite

Comments: Deep blue scorzalite with muscovite, quartz, and feldspar in matrix.
Location: Polermo Mine, North Groten, New Hampshire, USA. Scale: 5 x 3.5 cm.
© John Veevaert

Scorzalite Crystallography

Axial Ratios:

a:b:c =0.9801:1:0.9926

Cell Dimensions:

a = 7.1568, b = 7.3018, c = 7.2481, Z = 2; beta = 120.588° V = 326.06 Den(Calc)= 3.32

Crystal System:

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

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

By Intensity(I/I_o): 3.206(1), 3.246(0.75), 3.152(0.5),

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

Lindberg M L , Christ C L , Acta Crystallographica , 12 (1959) p.695-697, Crystal structures of the isostructural minerals lazulite,, scorzalite and barbosalite

Physical Properties of Scorzalite

Cleavage:

{110} Good

Color:

Dark blue, Greenish blue.

Density:

3.27

Diaphaneity:

Subtranslucent to Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Scorzalite

Gladstone-Dale:

CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1936,KPDmeas= 0.1965,KC= 0.2005
Ncalc = 1.66 - 1.67

Optical Data:

Biaxial (-), a=1.604-1.639, b=1.626-1.67, g=1.637-1.68, bire=0.0330-0.0410, 2V(Calc)=58-68, 2V(Meas)=62. Dispersion r > v.

Pleochroism (x):

colorless.

Pleochroism (y):

blue.

Pleochroism (z):

darker blue.

Calculated Properties of Scorzalite

Electron Density:

Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Scorzalite =3.27 gm/cc.

Fermion Index:

Fermion Index = 0.004825955
Boson Index = 0.995174045

Photoelectric:

PE_Scorzalite= 5.24 barns/electron
U=PE_Scorzalite x rElectron Density= 16.89 barns/cc.

Radioactivity:

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

Scorzalite Classification

Dana Class:

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

(41.10)where (A++ B++)3 (XO4)2 Zq

(41.10.01)Lazulite Group

41.10.01.01 Lazulite MgAl2(PO4)2(OH)2 P 2₁/c 2/m

41.10.01.02 Scorzalite (Fe,Mg)Al2(PO4)2(OH)2 P 2/c 2/m

41.10.01.03 Hentschelite CuFe2(PO4)2(OH)2 P 2₁/n 2/m

41.10.01.04 Barbosalite FeFe2(PO4)2(OH)2 P 2₁/c 2/m

Strunz Class:

08.BB.40 08 - PHOSPHATES, ARSENATES, VANADATES

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

08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1

08.BB.40 Barbosalite FeFe2(PO4)2(OH)2 P 2₁/c 2/m

08.BB.40 Wilhelmkleinite! ZnFe3(AsO4)2(OH)2 P 2₁/n 2/m

08.BB.40 Hentschelite CuFe2(PO4)2(OH)2 P 2₁/n 2/m

08.BB.40 Lazulite MgAl2(PO4)2(OH)2 P 2₁/c 2/m

08.BB.40 Scorzalite (Fe,Mg)Al2(PO4)2(OH)2 P 2/c 2/m

Other Scorzalite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Sinkankas66)

See Also:

Links to other databases for Scorzalite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

Search for Scorzalite using:

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

Visit our Advertisers for Scorzalite :

A Bijoux Google Search for Scorzalite
Adam's Minerals Google Search for Scorzalite
Cape Minerals Google Search for Scorzalite
Dakota Matrix Minerals Google Search for Scorzalite
Excalibur Mineral Corp. Google Search for Scorzalite
Exceptional Minerals Google Search for Scorzalite
John Betts Fine Minerals Search for Scorzalite
McDougall Minerals Google Search for Scorzalite
Mineral News Website Link
Rock and Mineral Shows Google Search for Scorzalite
Weinrich Minerals, Inc. Google Search for Scorzalite

Ask about Scorzalite 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 Scorzalite Specimen Label here :

Scorzalite

(Fe++,Mg)Al2(PO4)2(OH)2
Dana No: 41.10.01.02 Strunz No: 08.BB.40
Locality:

Notes: