[On-Line Catalogue] [On-Line Auctions] [eBay] [Contact Us] [Policies] We specialize in fine European and Asian Mineral Specimens Heliodor is based in Prague, Czech Republic General Mcguinnessite Information(Mg,Cu)2(CO3)(OH)2 |
Molecular Weight = 162.25 gm |
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Magnesium 22.47 % Mg 37.26 % MgO |
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Copper 19.58 % Cu 24.51 % CuO |
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Hydrogen 1.24 % H 11.10 % H2O |
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Carbon 7.40 % C 27.12 % CO2 |
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Oxygen 49.30 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Mg1.5Cu0.5(CO3)(OH)2 |
Occurs in serpentinized peridotite. |
Approved IMA 1981 |
Miners Ridge, Red Mountain, 15 miles SE of Ukiah, Mendocino County, California, USA. Link to MinDat.org Location Data. |
Named for Albert L. McGuinness (1926-1990), mineral dealer, San Mateo, California, USA> |
Mcguinnessite + Pronunciation |
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Mcguinnessite Crystallographya:b:c =0.7824:1:0.2813 |
a = 9.398, b = 12.011, c = 3.379, Z = 4; beta = 93.28° V = 380.79 Den(Calc)= 2.83 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/a or P 21/a |
By Intensity(I/Io): 6.015(1), 3.694(0.67), 2.14(0.3),2.53(0.25), 2.33(0.2), 5.05(0.2), 3(0.1), 7.4(0.1), |
| Physical Properties of McguinnessiteBlue green, Green, White. |
3.02 - 3.22, Average = 3.12 |
Transparent to Translucent |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Spherical - Spherical, rounded aggregates. |
2.5 - Finger Nail |
Vitreous - Silky |
| Optical Properties of McguinnessiteCI meas= -0.039 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.146 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2419,KPDmeas= 0.2194,KC= 0.2112 Ncalc = 1.6 - 1.68 Biaxial (-), a=1.596-1.602, b=1.724-1.73, g=1.724-1.732, bire=0.1280-0.1300 |
very pale green. |
light blue green. |
light blue green. |
| Calculated Properties of McguinnessiteBulk Density (Electron Density)=3.10 gm/cc |
note: Specific Gravity of Mcguinnessite =3.12 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEMcguinnessite = 8.94 barns/electron |
U=PEMcguinnessite x rElectron Density= 27.69 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Mcguinnessite is Not Radioactive | Mcguinnessite Classification16a.03.01.05 (16a)Carbonates - Hydroxyl or Halogen |
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(16a.03)where (A B)2 (XO3) Zq |
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(16a.03.01)Rosasite Group |
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05.BA.10 05 - CARBONATES (NITRATES) |
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05.B - Carbonates with additional anions, without H2O |
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05.BA -With Cu, Co, Ni, Zn, Mg, Mn |
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| Other Mcguinnessite InformationNAME( MinRec) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
Links to other databases for Mcguinnessite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - Google Images 4 - Google Scholar 5 - Handbook of Mineralogy (MinSocAm) 6 - MinDAT 7 - MinMax(Deutsch) 8 - MinMax(English) 9 - Mineralienatlas (Deutsch) 10 - QUT Mineral Atlas 11 - Ruff.Info Search for Mcguinnessite using: Visit our Advertisers for Mcguinnessite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Mcguinnessite Mineral Data : Ask about Mcguinnessite here : Print or Cut-and-Paste your Mcguinnessite Specimen Label here :
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