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Paceite Mineral Data
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General Paceite Information
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 Chemical Formula: |
CaCu(CH3COO)4•6(H2O) |
| Composition: |
Molecular Weight = 447.89 gm |
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Calcium 8.95 % Ca |
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Copper 14.19 % Cu |
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Hydrogen 5.40 % H |
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Carbon 21.45 % C |
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Oxygen 50.01 % O |
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______ |
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100.00 % |
| Empirical Formula: |
CaCuC8H12O8•6(H2O) |
| Environment: |
Secondary mineral in a gossen in contact with decaying leaf litter. |
| IMA Status: |
Approved IMA 2002 (Dana # Added) |
| Locality: |
Potosi open pit, Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Frank L Pace (1948-), who discovered the mineral. |
| Synonym: |
IMA2001-030 |
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Paceite Crystallography
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| Axial Ratios: |
a:c = 1:1.45549 |
| Cell Dimensions: |
a = 11.155, c = 16.236, Z = 4; V = 2,020.31 Den(Calc)= 1.47 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 4/m |
| X Ray Diffraction: |
By Intensity(I/Io): 7.896(1)(110), 3.5(0.2)(310,204,312), 5.586(0.15)(200),8.132(0.08)(002), 9.297(0.06)(101), 2.497(0.04), 3.042(0.03), |
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Physical Properties of Paceite
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| Cleavage: |
{100} Perfect, {110} Perfect |
| Color: |
Dark blue. |
| Diaphaneity: |
Translucent |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. |
| Habit: |
Water Soluble - Water soluble mineral. |
| Hardness: |
1.5 - Between Talc and Gypsum |
| Luster: |
Vitreous (Glassy) |
| Streak: |
pale blue |
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Optical Properties of Paceite
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| Optical Data: |
Uniaxial (+), w=1.439, e=1.482, bire=0.0430. |
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Calculated Properties of Paceite
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| Electron Density: |
Bulk Density (Electron Density)=1.53 gm/cc
note: Specific Gravity of Paceite =1.47 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0027288095
Boson Index = 0.9972711905 |
| Photoelectric: |
PEPaceite = 7.01 barns/electron
U=PEPaceite x rElectron Density= 10.71 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paceite is Not Radioactive |
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Paceite Classification
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| Dana Class: |
50.02.07.02 (50)Salts of Organic Acids |
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(50.02)(Mellitates, Citrates, Cyanates, and Acetates) |
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(50.02.07)Hoganite Group |
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50.02.07.01 Hoganite! Cu(CH3COO)2•H2O C 2/c 2/m |
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50.02.07.02 Paceite! CaCu(CH3COO)4•6(H2O) I 4/m 4/m |
| Strunz Class: |
10.AA.30 10 - ORGANIC COMPOUNDS |
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10.A - Salts of Organic Acids |
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10.AA -Formates, Acetates, etc. |
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10.AA.30 Paceite! CaCu(CH3COO)4•6(H2O) I 4/m 4/m |
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Other Paceite Information
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| References: |
NAME( AmMin, Vol 88, p 476) PHYS. PROP.(AmMin, Vol 88, p 476) OPTIC PROP.(AmMin, Vol 88, p 476) |
| See Also: |
Links to other databases for Paceite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Paceite Specimen Label here :
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Paceite
CaCu(CH3COO)4•6(H2O)
Dana No: 50.02.07.02 Strunz No: 10.AA.30
Locality:
Notes:
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