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Scorzalite Mineral Data

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General Scorzalite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mg)Al2(PO4)2(OH)2
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Fe2+0.75Mg0.25Al2(PO4)2(OH)2
Help on Environment: Environment: Highly aluminous metamorphic rocks and granitic pegmatites. Forms a series with lazulite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1947
Help on Locality: Locality: Corrego Firo pegmatite, Minas Gerias, Brazil. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Everisto Pena Scorza (1899-?), Brazilian mineralogist, Mineral Survey of Brazil.
Help on Name Pronunciation: Name Pronunciation: Scorzalite + Pronunciation Say SCORZALITE
Help on Synonym: Synonym: ICSD 26497
  PDF 35-632

Scorzalite Image

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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

Help on Axial Ratios: Axial Ratios: a:b:c =0.9801:1:0.9926
Help on Cell Dimensions: Cell Dimensions: a = 7.1568, b = 7.3018, c = 7.2481, Z = 2; beta = 120.588° V = 326.06 Den(Calc)= 3.32
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.206(1), 3.246(0.75), 3.152(0.5),

Physical Properties of Scorzalite

Help on Cleavage: Cleavage: {110} Good
Help on Color: Color: Dark blue, Greenish blue.
Help on Density: Density: 3.27
Help on Diaphaneity: Diaphaneity: Subtranslucent to Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white

Optical Properties of Scorzalite

Help on Gladstone-Dale: 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
Help on Optical Data: 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.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): blue.
Help on Pleochroism (z): Pleochroism (z): darker blue.

Calculated Properties of Scorzalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Scorzalite =3.27 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.004825955
Boson Index = 0.995174045
Help on Photoelectric: Photoelectric: PEScorzalite = 5.24 barns/electron
U=PEScorzalite x rElectron Density= 16.89 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scorzalite is Not Radioactive

Scorzalite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.10)where (A++ B++)3 (XO4)2 Zq
  (41.10.01)Lazulite Group Lazulite MgAl2(PO4)2(OH)2 P 21/c 2/m Scorzalite (Fe,Mg)Al2(PO4)2(OH)2 P 2/c 2/m Hentschelite CuFe2(PO4)2(OH)2 P 21/n 2/m Barbosalite FeFe2(PO4)2(OH)2 P 21/c 2/m
Help on  Strunz Class: 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

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Sinkankas66)
Help on See Also: 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

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Dana No: Strunz No: 08.BB.40





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