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Mcguinnessite Mineral Data + |
General Mcguinnessite Information |
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| (Mg,Cu)2(CO3)(OH)2 | |||
| Molecular Weight = 162.25 gm | |||
| Magnesium 22.47 % Mg 37.26 % MgO | |||
| Copper 19.58 % Cu 24.51 % CuO | |||
| Hydrogen 1.24 % H 11.10 % H2O | |||
| Carbon 7.40 % C 27.12 % CO2 | |||
| Oxygen 49.30 % O | |||
| ______ ______ | |||
| 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 Image | |||
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Mcguinnessite Crystallography |
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| a: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 Mcguinnessite |
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| Blue 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 Mcguinnessite |
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| CI 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 |
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| 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 Mcguinnessite |
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relectron=3.10 gm/cc |
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| Fermion Index = 0.02352 Boson Index = 0.97648 |
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PEMcguinnessite = 8.94 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mcguinnessite is Not Radioactive |
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Mcguinnessite Classification |
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| 16a.3.1.5 (16a)Carbonates - Hydroxyl or Halogen | |||
| (16a.3)where (A B)2 (XO3) Zq | |||
| (16a.3.1)Rosasite Group | |||
| V/C.01-40 V - Nitrates, Carbonates and Borates | |||
| V/C - Waterfree carbonates with unfamiliar anions | |||
| V/C.01 - Azurite - Rosasite group and related compounds | |||
Other Mcguinnessite Information |
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| NAME( 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 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Mcguinnessite using: Visit our Advertisers for Mcguinnessite : Translate Mcguinnessite Mineral Data : Ask about Mcguinnessite here : Print or Cut-and-Paste your Mcguinnessite Specimen Label here :
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