Varulite Mineral Data

Advertisment

General Varulite Information

Chemical Formula:

NaCaMn(Mn,Fe++,Fe+++)2(PO4)3

Composition:

Molecular Weight = 513.48 gm

Sodium 4.48 % Na 6.04 % Na₂O

Calcium 7.81 % Ca 10.92 % CaO

Manganese 24.07 % Mn 31.08 % MnO

Iron 8.16 % Fe 7.00 % FeO / 3.89 % Fe₂O₃

Phosphorus 18.10 % P 41.47 % P₂O₅

Oxygen 37.39 % O

______ ______

100.00 % 100.39 % = TOTAL OXIDE

Empirical Formula:

NaCaMn²⁺_2.25Fe²⁺_0.5Fe³⁺_0.25(PO₄)₃

IMA Status:

Valid Species (Pre-IMA) 1937

Locality:

Verutrask pegmatite, Boliden mine, Skelleftea, Vasterbottea, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Varulite

Varulite Image

Images:

Varulite

Comments: Dark brown to dark green varulite in white feldspar.
Location: Varutrask, Vasterbotten, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Varulite Crystallography

Axial Ratios:

a:b:c =0.9497:1:0.5151

Cell Dimensions:

a = 11.91, b = 12.54, c = 6.46, Z = 4; beta = 114.98° V = 874.56 Den(Calc)= 3.90

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.74(1), 2.56(0.4), 3.4(0.4),

Physical Properties of Varulite

Cleavage:

{100} Good, {010} Distinct

Color:

Yellow green, Olive green.

Density:

3.581

Diaphaneity:

Translucent

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

greenish white

Optical Properties of Varulite

Gladstone-Dale:

CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1833,KPDmeas= 0.1997,KC= 0.1969
Ncalc = 1.71 - 1.77

Optical Data:

Biaxial (+), a=1.708, g=1.722, bire=0.0140, 2V(Meas)=70. Dispersion r > v.

Pleochroism (x):

yellow green.

Pleochroism (z):

grass green.

Calculated Properties of Varulite

Electron Density:

Bulk Density (Electron Density)=3.46 gm/cc
note: Specific Gravity of Varulite =3.58 gm/cc.

Fermion Index:

Fermion Index = 0.0020141656
Boson Index = 0.9979858344

Photoelectric:

PE_Varulite= 10.55 barns/electron
U=PE_Varulite x rElectron Density= 36.45 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Varulite is Not Radioactive

Varulite Classification

Dana Class:

38.02.03.03 (38)Anhydrous Phosphates, etc

(38.02)(A+ B++)5 (XO4)3

(38.02.03)Alluaudite-Wyllieite Group (Alluaudite Subgroup)

38.02.03.01 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

38.02.03.02 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

38.02.03.03 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

38.02.03.04 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

38.02.03.05 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

38.02.03.06 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

38.02.03.07 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m

38.02.03.08 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m

38.02.03.09 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m

38.02.03.10 Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m

38.02.03.11 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m

38.02.03.12 IMA2008-064! Na16Mn25Al8(PO4)30 Pc m

Strunz Class:

08.AC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AC -With medium-sized and large cations

08.AC.10 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

08.AC.10 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m

08.AC.10 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

08.AC.10 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m

08.AC.10 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

08.AC.10 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m

08.AC.10 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

08.AC.10 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m

08.AC.10 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

08.AC.10 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m

08.AC.10 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

08.AC.10 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m

08.AC.10 Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m

08.AC.10 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m

Other Varulite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Varulite :
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

Search for Varulite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Varulite :

A Bijoux Google Search for Varulite
Adam's Minerals Google Search for Varulite
Cape Minerals Google Search for Varulite
Dakota Matrix Minerals Google Search for Varulite
Excalibur Mineral Corp. Google Search for Varulite
Exceptional Minerals Google Search for Varulite
John Betts Fine Minerals Search for Varulite
McDougall Minerals Google Search for Varulite
Mineral News Website Link
Rock and Mineral Shows Google Search for Varulite
Weinrich Minerals, Inc. Google Search for Varulite

Ask about Varulite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Varulite

NaCaMn(Mn,Fe++,Fe+++)2(PO4)3
Dana No: 38.02.03.03 Strunz No: 08.AC.10
Locality:

Notes: