Methane hydrate-I Mineral Data


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General Methane hydrate-I Information

Help on Chemical  Formula: Chemical Formula: 46(H2O)·2(S)·6(L)
Help on Composition: Composition: Molecular Weight = 957.04 gm
   Hydrogen  13.06 %  H
   Carbon    10.04 %  C
   Oxygen    76.90 %  O
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: (CH4)8(H2O)46
Help on Environment: Environment: 4 - 5 deg C and 50 atmospheres. Type II structure where S=N2,CH4,H2S L=CH4,H2S,CO2. Found in subsurface gas hydrate deposits.
Help on IMA Status: IMA Status: Not Submitted IMA (Dana # Added)
Help on Locality: Locality: World wide. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition of the component chemicals.
Help on Synonym: Synonym: Methane Clathrate
  Methane hydrate
 

Methane hydrate-I Image

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Methane hydrate-I

Comments: Yellow to white outcropping of massive methane hydrate infested with 2 to 5 cm polychaete worms (Hesiocoeca sp), AKA "ice worms".
Location: 540 meters deep in the Gulf of Mexico. Scale: Picture size 30 cm.
© Charles Fisher / Penn State

Methane hydrate-I Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 17.3, Z = 3; V = 5,177.72 Den(Calc)= 0.92
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: P m3n
 

Physical Properties of Methane hydrate-I

Help on Cleavage: Cleavage: None
Help on Color: Color: White, Yellow white.
Help on Density: Density: 0.95
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white
 

Optical Properties of Methane hydrate-I

Help on Optical Data: Optical Data: Isotropic, n=1.3.
 

Calculated Properties of Methane hydrate-I

Help on Electron Density: Electron Density:

relectron=1.04 gm/cc
note: rMethane hydrate-I =0.92 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00149
Boson Index = 0.99851
Help on Photoelectric: Photoelectric:

PEMethane hydrate-I = 0.32 barns/electron
U=PEMethane hydrate-I x relectron= 0.33 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Methane hydrate-I is Not Radioactive

 

Methane hydrate-I Classification

Help on  Dana Class: Dana Class: 4.1.3.1 (4)Simple Oxides
  (4.1)with a cation charge of 1+ (A+2 O)
  (4.1.3)Gas Hydrate Group
 
4.1.3.1 Methane hydrate-I ! 46(H2O)·2(S)·6(L) P m3n 4/m 3 2/m
 
4.1.3.2 Methane hydrate-II! 136(H2O)·16(S)·8(L) F d3m 4/m 3 2/m
 
4.1.3.3 Methane hydrate-H! 34(H2O)·3(S)·2(M)·1(L) P 6/mmm 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: IV/X.00-00 IV - Oxides
  IV/X - Unclassified Strunz Oxides
  IV/X.00 - Oxide
 

Other Methane hydrate-I Information

Help on References: References: PHYS. PROP.(AmMin, v 89, p1155)
Help on See Also: See Also: Links to other databases for Methane hydrate-I :
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

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Print or Cut-and-Paste your Methane hydrate-I Specimen Label here :

Methane hydrate-I

46(H2O)·2(S)·6(L)
Dana No: 4.1.3.1 Strunz No: IV/X.00-00
Locality:

 

Notes:

 

 
   
 
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