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Misenite Mineral Data

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General Misenite Information

Help on Chemical  Formula: Chemical Formula: K8H8(SO4)7 (?)
Help on Composition: Composition: Molecular Weight = 991.28 gm
   Potassium  31.55 %  K    38.01 % K2O
   Hydrogen    0.61 %  H     5.45 % H2O
   Sulfur     22.64 %  S    56.54 % SO3
   Oxygen     45.19 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K8H6(SO4)7
Help on Environment: Environment: Found as a transient efflorescence in a fumarole.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1849
Help on Locality: Locality: Cape Miseno, near Naples, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Misenite Say MISENITE

Misenite Image

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Comments: Colorless absolutely transparent misenite microcrystal (blue box), on white and orange halite..
Location: Cerros Pintados, Pampa del Tamarugal, Iquique Province, Tarapacá Region, Chile. Scale: Approximately 0.05 cm crystal.
© Jeff Weissman / Photographic Guide to Mineral Species

Misenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.2376:1:1.226
Help on Cell Dimensions: Cell Dimensions: a = 23, b = 7.104, c = 8.71, Z = 2; beta = 102.66° V = 1,388.54 Den(Calc)= 2.37
Help on Crystal System: Crystal System: Monoclinic
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.24(1), 3.65(0.6), 4.83(0.4),4.92(0.4), 2.89(0.3), 3.49(0.3), 3.95(0.3), 2.35(0.2),

Physical Properties of Misenite

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Colorless, Grayish white.
Help on Density: Density: 2.32
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Luster: Luster: Silky - Pearly
Help on Streak: Streak: white

Optical Properties of Misenite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2028,KPDmeas= 0.2072,KC= 0.1931
Ncalc = 1.45 - 1.46
Help on Optical Data: Optical Data: Biaxial (+), a=1.475, b=1.48, g=1.487, bire=0.0120, 2V(Calc)=82, 2V(Meas)=81.

Calculated Properties of Misenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.36 gm/cc
note: Specific Gravity of Misenite =2.37 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0019539786
Boson Index = 0.9980460214
Help on Photoelectric: Photoelectric: PEMisenite = 4.51 barns/electron
U=PEMisenite x relectron= 10.66 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 453.78 (Gamma Ray American Petroleum Institute Units)
Concentration of Misenite per GRapi unit = 0.22 (%)

Estimated Radioactivity from Misenite - barely detectable


Misenite Classification

Help on  Dana Class: Dana Class: (28)Anhydrous Acid and Sulfates
  (28.01)(Anhydrous, Acid)
  (28.01.02)Dana Group Misenite K8H8(SO4)7(?) Mono
Help on  Strunz Class: Strunz Class: 07.AD.15 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AD -With only large cations
07.AD.15 Misenite K8H8(SO4)7(?) Mono

Other Misenite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Misenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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


K8H8(SO4)7 (?)
Dana No: Strunz No: 07.AD.15





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