Mineralogy Database

Hedenbergite Mineral Data

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General Hedenbergite Information

Help on Chemical  Formula: Chemical Formula: CaFe++Si2O6
Help on Composition: Composition: Molecular Weight = 248.09 gm
   Calcium  16.15 %  Ca   22.60 % CaO
   Iron     22.51 %  Fe   28.96 % FeO
   Silicon  22.64 %  Si   48.44 % SiO2
   Oxygen   38.69 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaFe2+Si2O6
Help on Environment: Environment: Contact metasomatic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1819
Help on Locality: Locality: Nordmark, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Swedish mineralogist, M. A. L. Hedenberg.
Help on Name Pronunciation: Name Pronunciation: Hedenbergite + Pronunciation Say HEDENBERGITE
Help on Synonym: Synonym: ICSD 10226
  PDF 41-1372

Hedenbergite Image

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Comments: Thick, bluish gray blocky prisms of hedenbergite on matrix.
Location: Harstig mine, Pajsberg, Varmland, Sweden. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Hedenbergite   Ilvaite

Comments: Doubly terminated, black ilvaite on crystals of greenish gray hedenbergite with minor galena.
Location: First Sovietsky mine, Dalnjegorsk, Russia. Scale: 4 x 2.8 x 1.8 cm.
© Fabre Minerals

Hedenbergite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0926:1:0.5849
Help on Cell Dimensions: Cell Dimensions: a = 9.827, b = 8.994, c = 5.261, Z = 4; beta = 105.52° V = 448.03 Den(Calc)= 3.68
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.97(1), 2.53(0.5), 2.56(0.3),

Physical Properties of Hedenbergite

Help on Cleavage: Cleavage: {???} Perfect, {???} Indistinct
Help on Color: Color: Brownish green, Gray green, Grayish black, Dark green, Black.
Help on Density: Density: 3.55
Help on Diaphaneity: Diaphaneity: Transparent to translucent to opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Lamellar - Thin laminae producing a lamellar structure.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white green

Optical Properties of Hedenbergite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1981,KPDmeas= 0.2053,KC= 0.2027
Ncalc = 1.72 - 1.75
Help on Optical Data: Optical Data: Biaxial (+), a=1.699-1.739, b=1.705-1.745, g=1.728-1.757, bire=0.0180-0.0290, 2V(Calc)=56-72, 2V(Meas)=58-63. Dispersion distinct to strong, r > v.
Help on Pleochroism (x): Pleochroism (x): purplish green, pale bluish green, dark bluish green, or deep green.
Help on Pleochroism (y): Pleochroism (y): pinkish purple, pale green, or bluish green.

Calculated Properties of Hedenbergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Hedenbergite =3.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHedenbergite = 9.53 barns/electron
U=PEHedenbergite x rElectron Density= 33.29 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hedenbergite is Not Radioactive

Hedenbergite Classification

Help on  Dana Class: Dana Class: 65.01.03a.02 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.01)with chains P=2
  (65.01.03a)C2/c clinopyroxenes (Ca clinopyroxenes)
65.01.03a.01 Diopside CaMgSi2O6 C 2/c 2/m
65.01.03a.02 Hedenbergite CaFeSi2O6 C 2/c 2/m
65.01.03a.03 Augite (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 C 2/c 2/m
65.01.03a.04 Johannsenite CaMnSi2O6 C 2/c 2/m
65.01.03a.05 Petedunnite Ca(Zn,Mn,Fe,Mg)Si2O6 C 2/c 2/m
65.01.03a.06 Esseneite CaFeAlSiO6 C 2/c 2/m
65.01.03a.07 Davisite! Ca(Sc,Ti,Mg,Ti)AlSiO6 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.DA.15 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DA -Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
09.DA.15 Augite (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 C 2/c 2/m
09.DA.15 Esseneite CaFeAlSiO6 C 2/c 2/m
09.DA.15 Diopside CaMgSi2O6 C 2/c 2/m
09.DA.15 Johannsenite CaMnSi2O6 C 2/c 2/m
09.DA.15 Hedenbergite CaFeSi2O6 C 2/c 2/m
09.DA.15 Petedunnite Ca(Zn,Mn,Fe,Mg)Si2O6 C 2/c 2/m
09.DA.15 Davisite! Ca(Sc,Ti,Mg,Ti)AlSiO6 C 2/c 2/m

Other Hedenbergite Information

Help on See Also: See Also: Links to other databases for Hedenbergite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - GeoScienceWorld
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - HyperPhysics
16 - MinDAT
17 - Mineral and Gemstone Kingdom
18 - Mineralienatlas (Deutsch)
19 - Online Mineral Museum
20 - QUT Mineral Atlas
21 - Ruff.Info
22 - Scandinavian mineral gallery
23 - UCLA - Petrography Thin-Sections

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Dana No: 65.01.03a.02 Strunz No: 09.DA.15





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