Mineralogy Database

Jadeite Mineral Data

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General Jadeite Information

Help on Chemical  Formula: Chemical Formula: Na(Al,Fe+++)Si2O6
Help on Composition: Composition: Molecular Weight = 205.03 gm
   Sodium    11.21 %  Na   15.11 % Na2O
   Aluminum  11.84 %  Al   22.38 % Al2O3
   Iron       2.72 %  Fe    3.89 % Fe2O3
   Silicon   27.40 %  Si   58.61 % SiO2
   Oxygen    46.82 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaAl0.9Fe3+0.1(Si2O6)
Help on Environment: Environment: Strongly metamorphosed sodium-rich serpentinous rocks
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1863
Help on Locality: Locality: Clear Creek, San Benito County, California. Near Tawmaw and Hpakan villages, Upper Burma. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Spanish, piedra de ijada, "stone of the side," because its supposed to cure kidney ailments if applied to the side of the body.
Help on Name Pronunciation: Name Pronunciation: Jadeite Say JADEITE
Help on Synonym: Synonym: ICSD 10232
  PDF 22-1338

Jadeite Image

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Comments: Fibrous crystals of Jadeite.
Location: Russian River, near Cloverdale, Mendocino County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Stronalsite   Jadeite

Comments: White stronalsite veinlets in massive pale green jadeite.
Location: Ohasa, Okayama, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jadeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0999:1:0.6095
Help on Cell Dimensions: Cell Dimensions: a = 9.418, b = 8.562, c = 5.219, Z = 4; beta = 107.56° V = 401.23 Den(Calc)= 3.39
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): 2.83(1), 2.42(0.9), 2.92(0.8),

Physical Properties of Jadeite

Help on Cleavage: Cleavage: {110} Good
Help on Color: Color: Green, White, Pale bluish gray, Grayish green, Pale purple.
Help on Density: Density: 3.25 - 3.35, Average = 3.3
Help on Diaphaneity: Diaphaneity: Translucent to subtranslucent
Help on Fracture: Fracture: Tough - Difficult to break apart as shown by fibrous minerals and most metals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Jadeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1979,KPDmeas= 0.2033,KC= 0.2092
Ncalc = 1.68 - 1.71
Help on Optical Data: Optical Data: Biaxial (+), a=1.654-1.673, b=1.659-1.679, g=1.667-1.693, bire=0.0130-0.0200, 2V(Calc)=68-78, 2V(Meas)=70-80. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): colorless or green.
Help on Pleochroism (y): Pleochroism (y): colorless or yellowish green.

Calculated Properties of Jadeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.26 gm/cc
note: Specific Gravity of Jadeite =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEJadeite = 2.38 barns/electron
U=PEJadeite x rElectron Density= 7.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jadeite is Not Radioactive

Jadeite Classification

Help on  Dana Class: Dana Class: 65.01.03c.01 (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 Jadeite Information

Help on See Also: See Also: Links to other databases for Jadeite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - CalTech Mineral Spectroscopy
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - NSDL Reciprocal Net (JAVA)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Tradeshop.com - The Rainbow of Gems
20 - UCLA - Petrography Thin-Sections
21 - University of Texas at Austin

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Dana No: 65.01.03c.01 Strunz No: 09.DA.25





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