Varulite Mineral Data
General Varulite Information
Chemical Formula:
NaCaMn(Mn,Fe++,Fe+++)2(PO4)3
Composition:
Molecular Weight = 513.48 gm
Sodium 4.48 % Na 6.04 % Na2 O
Calcium 7.81 % Ca 10.92 % CaO
Manganese 24.07 % Mn 31.08 % MnO
Iron 8.16 % Fe 7.00 % FeO / 3.89 % Fe2 O3
Phosphorus 18.10 % P 41.47 % P2 O5
Oxygen 37.39 % O
______ ______
100.00 % 100.39 % = TOTAL OXIDE
Empirical Formula:
NaCaMn2+ 2.25 Fe2+ 0.5 Fe3+ 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 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 - Prismatic H-M Symbol (2/m) Space Group: C 2/c
X Ray Diffraction:
By Intensity(I/Io ): 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:
PEVarulite = 10.55 barns/electronU=PEVarulite x r Electron 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
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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:
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