![]() |
Petedunnite Mineral Data |
General Petedunnite Information |
|||
![]() |
Ca(Zn,Mn++,Fe++,Mg)Si2O6 | ||
![]() |
Molecular Weight = 246.86 gm | ||
Sodium 0.93 % Na 1.26 % Na2O | |||
Calcium 14.61 % Ca 20.44 % CaO | |||
Magnesium 0.98 % Mg 1.63 % MgO | |||
Manganese 4.45 % Mn 5.75 % MnO | |||
Zinc 10.60 % Zn 13.19 % ZnO | |||
Iron 6.79 % Fe 5.82 % FeO / 3.23 % Fe2O3 | |||
Silicon 22.75 % Si 48.68 % SiO2 | |||
Oxygen 38.89 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
![]() |
Ca0.9Na0.1Zn0.4Fe2+0.2Mn2+0.2Mg0.1Fe3+0.1Si2O6 | ||
![]() |
In a metamorphosed, stratiform zinc deposit. | ||
![]() |
Approved IMA 1987 | ||
![]() |
Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data. | ||
![]() |
Named for Pete J. Dunn, Department of Mineral Sciences, Smithsonian Institution, Washington D. C., USA. | ||
![]() |
Petedunnite + Pronunciation ![]() |
||
![]() |
ICSD 81450 | ||
PDF 40-495 | |||
Petedunnite Image | |||
![]() |
|
||
Petedunnite Crystallography |
|||
![]() |
a:b:c =1.0911:1:0.5855 | ||
![]() |
a = 9.82, b = 9, c = 5.27, Z = 4; beta = 105.6° V = 448.61 Den(Calc)= 3.65 | ||
![]() |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c | ||
![]() |
By Intensity(I/Io): 3.02(1), 2.537(0.8), 2.96(0.4), | ||
Physical Properties of Petedunnite |
|||
![]() |
{110} Good | ||
![]() |
Dark green. | ||
![]() |
3.68 | ||
![]() |
Translucent | ||
![]() |
Anhedral Grains - Granular minerals without the expression of crystal shapes | ||
![]() |
6 - Orthoclase | ||
![]() |
Vitreous (Glassy) | ||
![]() |
greenish white | ||
Optical Properties of Petedunnite |
|||
![]() |
CI meas= 0.077 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.069 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.189,KPDmeas= 0.1875,KC= 0.2031 Ncalc = 1.74 - 1.75 |
||
![]() |
Biaxial (+), a=1.68, b=1.69, g=1.7, bire=0.0200, 2V(Calc)=88, 2V(Meas)=70-90. | ||
![]() |
light yellow. | ||
![]() |
light yellow. | ||
![]() |
light green. | ||
Calculated Properties of Petedunnite |
|||
![]() |
Bulk Density (Electron Density)=3.58 gm/cc note: Specific Gravity of Petedunnite =3.65 gm/cc. |
||
![]() |
Fermion Index = 0.01 Boson Index = 0.99 |
||
![]() |
PEPetedunnite = 11.03 barns/electron U=PEPetedunnite x rElectron Density= 39.51 barns/cc. |
||
![]() |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Petedunnite is Not Radioactive |
||
Petedunnite Classification |
|||
![]() |
65.01.03a.05 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
(65.01)with chains P=2 | |||
(65.01.03a)C2/c clinopyroxenes (Ca clinopyroxenes) | |||
![]() |
09.DA.15 09 - SILICATES (Germanates) | ||
09.D - Inosilicates* Structural terminology according to Liebau (1985) | |||
09.DA -Inosilicates with 2-periodic single chains, Si2O6; pyroxene family | |||
Other Petedunnite Information |
|||
![]() |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2) | ||
![]() |
Links to other databases for Petedunnite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info Search for Petedunnite using: Visit our Advertisers for Petedunnite : Ask about Petedunnite here : Print or Cut-and-Paste your Petedunnite Specimen Label here :
|
||
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.