Berzeliite Mineral Data
General Berzeliite Information
Chemical Formula:
(Ca,Na)3(Mg,Mn)2(AsO4)3
Composition:
Molecular Weight = 588.10 gm
Sodium 2.93 % Na 3.95 % Na2 O
Calcium 15.33 % Ca 21.45 % CaO
Magnesium 6.20 % Mg 10.28 % MgO
Manganese 4.67 % Mn 6.03 % MnO
Arsenic 38.22 % As 58.62 % As2 O5
Oxygen 32.65 % O
______ ______
100.00 % 100.34 % = TOTAL OXIDE
Empirical Formula:
Ca2.25 Na0.75 Mg1.5 Mn2+ 0.5 (AsO4 )3
Environment:
In metamorphosed Fe-Mn orebodies.
IMA Status:
Valid Species (Pre-IMA) 1840
Locality:
In Sweden, found at Langban and Nordmark, Varmland, and in the Sjo mine, near Grythyttan, Orebro. Link to MinDat.org Location Data.
Name Origin:
In honor of the noted Swedish chemist and mineralogist, Jons Jacob Berzelius (1779-1848).
Name Pronunciation:
Berzeliite + Pronunciation
Synonym:
ICSD 27682
PDF 19-165
Berzeliite Image
Images:
Berzeliite
Comments: White calcite with included grains of yellowish-orange berzeliite in matrix.
Location: Langban, Filipstad, Varmland, Sweden.
Scale: 3 x 2.2 cm.
© John Veevaert
Berzeliite Crystallography
Cell Dimensions:
a = 12.405, Z = 8; V = 1,908.93 Den(Calc)= 4.09
Crystal System:
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d
X Ray Diffraction:
By Intensity(I/Io ): 2.75(1), 1.65(0.7), 1.71(0.7),
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Forms:
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Physical Properties of Berzeliite
Cleavage:
None
Color:
Orange, Sulfur yellow.
Density:
4.08
Diaphaneity:
Transparent to Translucent
Fracture:
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Hardness:
4.5-5 - Near Apatite
Luster:
Resinous
Streak:
white
Optical Properties of Berzeliite
Gladstone-Dale:
CI meas = 0.033 (Excellent) - where the CI = (1-KPDmeas /KC ) CI calc = 0.035 (Excellent) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1736,KPDmeas = 0.174,KC = 0.18 Ncalc = 1.73 - 1.74
Optical Data:
Isotropic, n=1.71.
Calculated Properties of Berzeliite
Electron Density:
Bulk Density (Electron Density)=3.87 gm/cc note: Specific Gravity of Berzeliite =4.08 gm/cc.
Fermion Index:
Fermion Index = 0.0065628816 Boson Index = 0.9934371184
Photoelectric:
PEBerzeliite = 29.48 barns/electronU=PEBerzeliite x r Electron Density= 114.01 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Berzeliite is Not Radioactive
Berzeliite Classification
Dana Class:
38.02.01.01 (38) Anhydrous Phosphates, etc
(38.02) (A+ B++)5 (XO4)3
(38.02.01) Berzeliite Group
38.02.01.01 Berzeliite (Ca,Na)3(Mg,Mn)2(AsO4)3 I a3d 4/m 3 2/m
38.02.01.02 Manganberzeliite (Ca,Na)3(Mn,Mg)2(AsO4)3 I a3d 4/m 3 2/m
38.02.01.03 Palenzonaite (Ca,Na)3Mn(V,As,Si)3O12 I a3d 4/m 3 2/m
38.02.01.04 Schaferite ! NaCa2Mg2(VO4)3 I a3d 4/m 3 2/m
Strunz Class:
08.AC.25 08 - PHOSPHATES, ARSENATES, VANADATES
08.A - Phosphates, etc. without additional anions, without H2O
08.AC -With medium-sized and large cations
08.AC.25 Berzeliite (Ca,Na)3(Mg,Mn)2(AsO4)3 I a3d 4/m 3 2/m
08.AC.25 Palenzonaite (Ca,Na)3Mn(V,As,Si)3O12 I a3d 4/m 3 2/m
08.AC.25 Manganberzeliite (Ca,Na)3(Mn,Mg)2(AsO4)3 I a3d 4/m 3 2/m
08.AC.25 Schaferite ! NaCa2Mg2(VO4)3 I a3d 4/m 3 2/m
Other Berzeliite Information
References:
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Berzeliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Scandinavian mineral gallery
16 - WWW-MINCRYST
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Berzeliite
(Ca,Na)3(Mg,Mn)2(AsO4)3
Dana No: 38.02.01.01 Strunz No: 08.AC.25
Locality:
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