Clearcreekite Mineral Data

General Clearcreekite Information

Chemical Formula:

Hg+3(CO3)(OH)•2(H2O)

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

Empirical Formula:

Hg_2.9(CO₃)(OH)_0.9•2.1(H₂O)

Environment:

Magnesite-quartz boulder in the prospect pit. Polymorph of peterbaylissite

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Prospect pit near the former Clear Creek mercury mine, New Idria district, San Benito County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA1999-003

Clearcreekite Crystallography

Axial Ratios:

a:b:c =0.7056:1:1.141

Cell Dimensions:

a = 6.76, b = 9.58, c = 10.931, Z = 4; beta = 105.53° V = 682.06 Den(Calc)= 6.77

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/I_o): 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

Cleavage:

{001} Good

Color:

Pale greenish yellow.

Diaphaneity:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.

Habit:

Tabular - Form dimensions are thin in one direction.

Luster:

Vitreous (Glassy)

Streak:

pale greenish yellow

Optical Properties of Clearcreekite

Optical Data:

Biaxial (?)

NCalc= 2.09 - from Gladstone-Dale relationship (KC = 0.1612) where Ncalc=Dcalc*KC+1

Calculated Properties of Clearcreekite

Electron Density:

Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Clearcreekite =6.77 gm/cc.

Fermion Index:

Fermion Index = 0.25
Boson Index = 0.75

Photoelectric:

PE_{Clearcreekite}=1,414.27 barns/electron
U=PE_{Clearcreekite} x rElectron Density=8,022.28 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clearcreekite is Not Radioactive

Clearcreekite Classification

Dana Class:

16b.04.04.02 (16b)Carbonates - Hydroxyl or Halogen

(16b.04)where (A)m (B)n (XO3)p Zq ï¿½ 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

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

References:

NAME( AmMin, Vol 87, p 355) PHYS. PROP.(AmMin, Vol 87, p 355)

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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Print or Cut-and-Paste your Clearcreekite Specimen Label here :

Clearcreekite

Hg+3(CO3)(OH)•2(H2O)
Dana No: 16b.04.04.02 Strunz No: 05.DC.30
Locality:

Notes:

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