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Clearcreekite Mineral Data

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General Clearcreekite Information

Help on Chemical  Formula: Chemical Formula: Hg+3(CO3)(OH)•2(H2O)
Help on Composition: Composition: Molecular Weight = 694.86 gm
   Mercury   83.72 %  Hg   87.06 % Hg2O
   Hydrogen   0.74 %  H     6.61 % H2O
   Carbon     1.73 %  C     6.33 % CO2
   Oxygen    13.82 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Hg2.9(CO3)(OH)0.9•2.1(H2O)
Help on Environment: Environment: Magnesite-quartz boulder in the prospect pit. Polymorph of peterbaylissite
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Prospect pit near the former Clear Creek mercury mine, New Idria district, San Benito County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA1999-003

Clearcreekite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7056:1:1.141
Help on Cell Dimensions: Cell Dimensions: a = 6.76, b = 9.58, c = 10.931, Z = 4; beta = 105.53° V = 682.06 Den(Calc)= 6.77
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.767(1)(221,220,131), 2.831(1)(023,211), 4.62(0.9)(012), 7.09(0.7)(011), 2.391(0.4)(040,204), 5.32(0.4)(111), 1.692(0.3)(244,

Physical Properties of Clearcreekite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Pale greenish yellow.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale greenish yellow

Optical Properties of Clearcreekite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 2.09 - from Gladstone-Dale relationship (KC = 0.1612) where Ncalc=Dcalc*KC+1

Calculated Properties of Clearcreekite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Clearcreekite =6.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.25
Boson Index = 0.75
Help on Photoelectric: Photoelectric: PEClearcreekite =1,414.27 barns/electron
U=PEClearcreekite x rElectron Density=8,022.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clearcreekite is Not Radioactive

Clearcreekite Classification

Help on  Dana Class: Dana Class: 16b.04.04.02 (16b)Carbonates - Hydroxyl or Halogen
  (16b.04)where (A)m (B)n (XO3)p Zq � x(H2O), with (m+n):p=8:1
  (16b.04.04)Dana Group
16b.04.04.01 Peterbaylissite Hg3(CO3)(OH)•2(H2O) Pcab 2/m 2/m 2/m
16b.04.04.02 Clearcreekite! Hg3(CO3)(OH)•2(H2O) P 21/c 2/m
Help on  Strunz Class: Strunz Class: 05.DC.30 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DC -With large cations
05.DC.30 Clearcreekite! Hg3(CO3)(OH)•2(H2O) P 21/c 2/m

Other Clearcreekite Information

Help on References: References: NAME( AmMin, Vol 87, p 355) PHYS. PROP.(AmMin, Vol 87, p 355)
Help on See Also: See Also: Links to other databases for Clearcreekite :
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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Dana No: 16b.04.04.02 Strunz No: 05.DC.30





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