Zykaite Mineral Data (original) (raw)

General Zykaite Information

Help on Chemical Formula: Chemical Formula:

Fe+++4(AsO4)3(SO4)(OH)•15(H2O)

Help on Composition: Composition:

Molecular Weight = 1,023.45 gm

Iron 21.83 % Fe 31.21 % Fe2O3

Arsenic 21.96 % As 33.69 % As2O5

Hydrogen 3.05 % H 27.28 % H2O

Sulfur 3.13 % S 7.82 % SO3

Oxygen 50.03 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Fe3+4(AsO4)3(SO4)(OH)•15(H2O)

Help on IMA Status: IMA Status:

Approved IMA 1978

Help on Locality: Locality:

Kank, near Kutna Hora, Czech Republic. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Vaclav Zyka (1926-), Czech geochemist.

Help on Name Pronunciation: Name Pronunciation:

Zykaite Say ZYKAITE

Zykaite Image

Click Here for Larger Zykaite Image in a New Browser Window Images:

Click Here for Larger Zykaite Image Zykaite Bukovskyite Comments: Pale beige acicular crystals of bukovskýite with white zykaite. Location: Christbescherung Mine, Großvoigtsberg, Freiberg District, Erzgebirge, Saxony, Germany.Scale: Picture size 1.3 mm. © Thomas Witzke / Abraxas-Verlag

Click Here for Larger Zykaite Image in a New Browser Window Images:

Click Here for Larger Zykaite Image Zykaite Comments: Round aggregates of Zykaite. Location: Reiche Zeche Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany.Scale: Specimen size 37 mm. © Thomas Witzke / Abraxas-Verlag

Zykaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =2.965:1:5.2596

Help on Cell Dimensions: Cell Dimensions:

a = 20.853, b = 7.033, c = 36.991, Z = 8; V = 5,425.07 Den(Calc)= 2.51

Help on Crystal System: Crystal System:

OrthorhombicSpace Group: Unk

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 10.4(1), 10.6(0.7), 6.92(0.4),

Physical Properties of Zykaite

Help on Color: Color:

Greenish white, Gray white.

Help on Density: Density:

2.5

Help on Diaphaneity: Diaphaneity:

Translucent

Help on Fracture: Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Help on Habit: Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Help on Hardness: Hardness:

2 - Gypsum

Help on Luster: Luster:

Earthy (Dull)

Help on Streak: Streak:

white

Optical Properties of Zykaite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2541,KPDmeas= 0.2551,KC= 0.2595
Ncalc = 1.65

Help on Optical Data: Optical Data:

Biaxial (-), a=1.632, b=1.635-1.636, g=1.646, bire=0.0140, 2V(Calc)=56-66, 2V(Meas)=60.

Calculated Properties of Zykaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.47 gm/cc
note: Specific Gravity of Zykaite =2.50 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0051070204
Boson Index = 0.9948929796

Help on Photoelectric: Photoelectric:

PEZykaite = 21.10 barns/electron
U=PEZykaite x rElectron Density= 52.16 barns/cc.

Help on Radioactivity: Radioactivity:

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

Zykaite Classification

Help on Dana Class: Dana Class:

43.05.03.02 (43)Compound Phosphates, etc.

(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen)

(43.05.03)Pitticite Group

43.05.03.01 Pitticite Hydrousferricarsenatesulfate(Fe,AsO4,SO4,H2O) None

43.05.03.02 Zykaite Fe4(AsO4)3(SO4)(OH)•15(H2O) Unk Ortho

Help on Strunz Class: Strunz Class:

08.DB.45 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DB -With only medium-sized cations, (OH, etc.):RO4 < 1:1

08.DB.45 Zykaite Fe4(AsO4)3(SO4)(OH)•15(H2O) Unk Ortho

Other Zykaite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Dana8)

Help on See Also: See Also:

Links to other databases for Zykaite :
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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Ask about Zykaite here :
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Print or Cut-and-Paste your Zykaite Specimen Label here :

Zykaite

Fe+++4(AsO4)3(SO4)(OH)•15(H2O)
Dana No: 43.05.03.02 Strunz No: 08.DB.45
Locality:

Notes: