Mineralogy Database

Aegirine Mineral Data

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General Aegirine Information

Help on Chemical  Formula: Chemical Formula: NaFe+++Si2O6
Help on Composition: Composition: Molecular Weight = 231.00 gm
   Sodium    9.95 %  Na   13.42 % Na2O
   Iron     24.18 %  Fe   34.56 % Fe2O3
   Silicon  24.32 %  Si   52.02 % SiO2
   Oxygen   41.56 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaFe3+(Si2O6)
Help on Environment: Environment: Sodium rich igneous nepheline syenites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1835
Help on Locality: Locality: Norway, Buskerud, Kongsberg. Magnet Cove, Hot Spring County, Arkansas. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Teutonic god of the sea. Acmite is from the Greek "point" in allusion to the pointed crystals.
Help on Name Pronunciation: Name Pronunciation: Aegirine Say AEGIRINE
Help on Synonym: Synonym: Acmite
 

Aegirine Image

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  Aegirine

Comments: Fully-terminated, prismatic crystal of aegirine.
Location: Khibiny Massif, Kola Peninsula, Russia. Scale: Crystal size 2.8 cm.
© John Veevaert

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  Catapleiite   Aegirine

Comments: Clear crystals of catapleiite with an attached 1.8 cm prismatic crystal of dark aegirine.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: 3.5 x 2.2 cm.
© John Veevaert

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  Henrymeyerite   Aegirine

Comments: A nearly black crystal of henrymeyerite with dark green prismatic crystals of aegirine in quartz.
Location: Green River formation, Uintah County, Utah, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

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  Lourenswalsite   Aegirine

Comments: Light brownish rosettes of lourenswalsite with dark green crystals of aegirine and white feldspar.
Location: Diamond Jo quarry, Magnet Cove, Hot Springs Co., Arkansas, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

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  Pectolite   Aegirine

Comments: White, cottony pectolite tufts with acicular aegirine.
Location: 3M quarry, Little Rock, Pulaski County, Arkansas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Calcioburbankite   Aegirine

Comments: Tan crystal spray of calcioburbankite on dark green aegirine.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Manganotychite   Aegirine

Comments: Pale rose-tan granular manganotychite with black aegirine prism.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aegirine Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0978:1:0.6018
Help on Cell Dimensions: Cell Dimensions: a = 9.65, b = 8.79, c = 5.29, Z = 4; beta = 107.5° V = 427.95 Den(Calc)= 3.59
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): 2.9(1), 6.369(0.9), 4.416(0.8),
Help on Forms: Forms:

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Help on Above

Forms: ( 0 1 0) ( 1 1 0) ( 1 0 0) ( 6 6 1) ( 1 1 1)

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Physical Properties of Aegirine

Help on Cleavage: Cleavage: {???} Distinct, {???} Distinct
Help on Color: Color: Green, Greenish black, Reddish brown, Black.
Help on Density: Density: 3.5 - 3.54, Average = 3.52
Help on Diaphaneity: Diaphaneity: Subtransparent to translucent to opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 6-6.5 - Orthoclase-Pyrite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: yellowish gray
 

Optical Properties of Aegirine

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.092 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.109 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.216,KPDmeas= 0.2203,KC= 0.2426
Ncalc = 1.85 - 1.87
Help on Optical Data: Optical Data: Biaxial (-), a=1.72-1.778, b=1.74-1.819, g=1.757-1.839, bire=0.0370-0.0610, 2V(Calc)=68-84, 2V(Meas)=60-90. Dispersion r > v.
Help on Pleochroism (x): Pleochroism (x): olive green, pale green, pale bluish green, dark grass green, or deep green.
Help on Pleochroism (y): Pleochroism (y): light bluish green, yellowish green, grass green, or emerald green.
Help on Pleochroism (z): Pleochroism (z): yellowish green, honey yellow, or light yellow.
 

Calculated Properties of Aegirine

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Aegirine =3.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAegirine = 8.29 barns/electron
U=PEAegirine x rElectron Density= 28.56 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aegirine is Not Radioactive
 

Aegirine Classification

Help on  Dana Class: Dana Class: 65.01.03c.02 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.01)with chains P=2
  (65.01.03c)C2/c clinopyroxenes (Na clinopyroxenes)
 
65.01.03c.01 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m
 
65.01.03c.02 Aegirine NaFeSi2O6 C 2/c 2/m
 
65.01.03c.03 Namansilite NaMn(Si2O6) C 2/c 2/m
 
65.01.03c.04 Kosmochlor NaCrSi2O6 C 2/c 2/m
 
65.01.03c.05 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m
 
65.01.03c.06 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.DA.25 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.25 Aegirine NaFeSi2O6 C 2/c 2/m
 
09.DA.25 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m
 
09.DA.25 Kosmochlor NaCrSi2O6 C 2/c 2/m
 
09.DA.25 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m
 
09.DA.25 Namansilite NaMn(Si2O6) C 2/c 2/m
 
09.DA.25 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m
 

Other Aegirine Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Aegirine :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - Franklin Minerals(Dunn)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - HyperPhysics
14 - MinDAT
15 - Mineral and Gemstone Kingdom
16 - Mineralienatlas (Deutsch)
17 - Online Mineral Museum
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - Scandinavian mineral gallery
21 - UCLA - Petrography Thin-Sections
22 - WWW-MINCRYST

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

Aegirine

NaFe+++Si2O6
Dana No: 65.01.03c.02 Strunz No: 09.DA.25
Locality:

 

Notes:

 

 
   
 


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