Maufite Mineral Data
General Maufite Information
Chemical Formula:
(Mg,Ni)Al4Si3O13•4(H2O) (?)
Composition:
Molecular Weight = 505.14 gm
Magnesium 3.61 % Mg 5.98 % MgO
Aluminum 21.37 % Al 40.37 % Al2 O3
Silicon 16.68 % Si 35.68 % SiO2
Nickel 2.90 % Ni 3.70 % NiO
Hydrogen 1.60 % H 14.27 % H2 O
Oxygen 53.84 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Mg0.75 Ni0.25 Al4 Si3 O13 •4(H2 O)
Environment:
As a seam in serpentine adjacent to a diabase dike. Maufite (1930) is an inadequately described species now considered to be interstratified clinochlore-lizardite.
IMA Status:
Discredited IMA 2006 - Valid Species (Pre-IMA) 1930
Locality:
On Ruorka Ranch, 2.4 km northeast of the Umvukwe geodetic beacon, Mazoe district, Umvukwe Mountains, Zimbabwe. Link to MinDat.org Location Data.
Name Origin:
Named for Herbert Brantwood Maufe (1879-1976), director of the Geological Service of Rhodesia
Name Pronunciation:
Maufite
Maufite Crystallography
Crystal System:
Monoclinic Space Group: Mono ?
Physical Properties of Maufite
Color:
Emerald green.
Density:
2.27
Diaphaneity:
Translucent
Fracture:
Regular - Flat surfaces (not cleavage) fractured in a regular pattern.
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.
Hardness:
3 - Calcite
Streak:
greenish white
Optical Properties of Maufite
Optical Data:
NCalc= 1.51 - from Gladstone-Dale relationship (KC = 0.2248) where Ncalc =Dmeas *KC +1
Calculated Properties of Maufite
Electron Density:
Bulk Density (Electron Density)=2.28 gm/cc note: Specific Gravity of Maufite =2.27 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PEMaufite = 2.50 barns/electronU=PEMaufite x r Electron Density= 5.71 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Maufite is Not Radioactive
Maufite Classification
Dana Class:
78.07.13.01 (78) Unclassified silicates
(78.07) wholly unclassified silicates
(78.07.13) Dana Group
78.07.13.01 Maufite ? (Mg,Ni)Al4Si3O13•4(H2O)(?) Mono ? Mono
Strunz Class:
09.ED.15 09 - SILICATES (Germanates)
09.E - Phyllosilicates
09.ED -Phyllosilicates with kaolinite layers
09.ED.15 Clinochrysotile ? Mg3Si2O5(OH)4 Cc, C 2/m Mono
09.ED.15 Berthierine (Fe,Fe,Al,Mg)2-3(Si,Al)2O5(OH)4 Cm m
09.ED.15 Brindleyite (Ni,Mg,Fe)2Al(SiAl)O5(OH)4 C 2 2
09.ED.15 Amesite Mg2Al(SiAl)O5(OH)4 C1 1
09.ED.15 Antigorite (Mg,Fe)3Si2O5(OH)4 Cm m
09.ED.15 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono
09.ED.15 Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 Cm m
09.ED.15 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 31 m 3m
09.ED.15 Chrysotile Mg3Si2O5(OH)4 A2/m 2/m
09.ED.15 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2
09.ED.15 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono
09.ED.15 Kellyite (Mn,Mg,Al)3(Si,Al)2O5(OH)4 P 63 6
09.ED.15 Maufite ? (Mg,Ni)Al4Si3O13•4(H2O)(?) Mono ? Mono
09.ED.15 Lizardite Mg3Si2O5(OH)4 P1 1
09.ED.15 Orthochrysotile ? Mg3Si2O5(OH)4 Unk Ortho
09.ED.15 Manandonite Li2Al4[(Si2AlB)O10](OH)8 C1 1
09.ED.15 Pecoraite Ni3Si2O5(OH)4 C 2/m 2/m
09.ED.15 Parachrysotile ? Mg3Si2O5(OH)4 Unk Ortho
Other Maufite Information
References:
NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2)
See Also:
Links to other databases for Maufite :
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 (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
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Maufite
(Mg,Ni)Al4Si3O13•4(H2O) (?)
Dana No: 78.07.13.01 Strunz No: 09.ED.15
Locality:
Notes:
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