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Oyelite

Pictures (5 Images total)

Oyelith, Bultfonteinit, Natrolith, Inesit
Views (File:
1642243012
): 159
Oyelith, Bultfonteinit, Natrolith, Inesit
Diese etwa 31 mm x 28 mm große Stufe zeigt neben prominentem weißem, prismatischem Natrolith und orangefarbenem Inesit auch weiße Oyelith-Bällchen und farblose, isometrische Bultfonteinitaggregate. Die Stufe stammt von der N'Chwaning II Mine im Kalahari Manganese Field in Südafrika.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: KMF-Oyel-5-1-2
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)/N'Chwaning II Mine
Mineral: Bultfonteinite, Inesite, Natrolite, Oyelite
Image: 1642243012
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Oyelith, Bultfonteinit, Natrolith, Inesit (SNr: KMF-Oyel-5-1-2)

Diese etwa 31 mm x 28 mm große Stufe zeigt neben prominentem weißem, prismatischem Natrolith und orangefarbenem Inesit auch weiße Oyelith-Bällchen und farblose, isometrische Bultfonteinitaggregate....
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2022-01-15
Locality: N'Chwaning II Mine / N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Oyelith
Views (File:
1322557715
): 1259
Oyelith
Größe: 2,8 x 3 x 3,5 cm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Christiane David; Contribution: Hg
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)
Mineral: Oyelite
Image: 1322557715
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Oyelith

Größe: 2,8 x 3 x 3,5 cm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Christiane David
Contribution: Hg 2011-11-29
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Oyelith
Views (File:
1219949326
): 1238
Oyelith
Bildbreite: 3 mm; Fundort: N'Chwaning Mine, Kalahari Manganfeld, Kuruman, Südafrika
Copyright: Leonardus; Contribution: slugslayer
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)
Mineral: Oyelite
Image: 1219949326
License: Usage for Mineralienatlas project only
Oyelith

Bildbreite: 3 mm; Fundort: N'Chwaning Mine, Kalahari Manganfeld, Kuruman, Südafrika
Copyright: Leonardus
Contribution: slugslayer 2008-08-28
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Oyelith
Views (File:
1309420518
): 1147
Oyelith
Größe: 6,67 mm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Matteo Chinellato; Contribution: Hg
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)
Mineral: Oyelite
Image: 1309420518
License: Usage for Mineralienatlas project only
Oyelith

Größe: 6,67 mm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Matteo Chinellato
Contribution: Hg 2011-06-30
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Oyelite
Views (File:
1478415150
): 630
Oyelite
Perfect quality, combo specimen, where oyelite balls aesthetically sitting with crystals of olmiite and calcite together, specimen from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa; Size 32 х 26 х 24 mm
Copyright: pegmatite; Contribution: pegmatite
Collection: pegmatite
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)/N'Chwaning II Mine
Mineral: Oyelite
Image: 1478415150
License: Usage for Mineralienatlas project only
Oyelite

Perfect quality, combo specimen, where oyelite balls aesthetically sitting with crystals of olmiite and calcite together, specimen from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manga...
Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2016-11-06
Locality: N'Chwaning II Mine / N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika

Collectors Summary

Color weiß
Streak color weiß
Hardness (Mohs) 5
Fracture faserig
Solubility +++ Säuren
Crystal System triklin,
Morphology faserig, traubig

Chemism

Chemical formula

Ca5BSi4O13(OH)3·4H2O

Empirical formula (analysis)

Ca4.96B1.02Si4.01O13(OH)3·4H2O

Chemical composition

Calcium, Silicium, Bor, Sauerstoff, Wasserstoff

Unit weight: 653.5157903 u; Number of atoms in the formula: 40.99

Info

Empirical formula:

Ca4.96B1.02Si4.01O13(OH)3·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.70

11

26.84

1.0079470

11.0874170
Boron

B

1.69

1.02

2.49

10.8117000

11.0279340
Oxygen

O

48.96

20

48.79

15.9994300

319.9886000
Silicon

Si

17.23

4.01

9.78

28.0855300

112.6229753
Calcium

Ca

30.42

4.96

12.10

40.0784000

198.7888640

Analysis wt%

SiO2 : 35.30, B2O3 : 4.80, CaO : 41.20, H2O : 17.40, CO2 : 0.40 (Ref: J.Jap.Assoc.Min.Petr.Econ.Geol.84)

Strunz 9th edition incl. updates

9.DQ.15

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
Q: Unklassifizierte Ketten- und Bandsilikate
15:Oyelith-Gruppe

Lapis Classification

VIII/D.19-010

VIII: SILIKATE
D: Unklassifizierte Silikate
19: Vorwiegend große Kationen: Na-K-Ca-Sr-Pb

Classification by Hölzel

9.DM.380

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
M: ~[Si3O9]6--...3-Chain, ~[Si6O15]6-
3: Tobermorite-Group

Dana 8th edition

72.03.02.08

72: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
03: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
02: Tobermorite group (5- & 8-membered rings)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.011
Birefringence chart\! Oyelite title=Birefringence chart Oyelite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.602

RI value β

1.606

RI value γ / ε

1.613

Ri mean

1.607

2V angle

Biaxial (+) 65°

Optical Data Luminescence

Color LW-UV (365nm)

  

weiß

Color SW-UV (254nm)

  

violett

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

triklin

Cell parameters a (Å)

7.2557(5)

Cell parameters b (Å)

10.7390(11)

Cell parameters c (Å)

11.2399(8)

Cell parameters a/b or c/a

0.676

Cell parameters c/b

1.047

Cell parameters α

89.432(7)

Cell parameters β

89.198(6)

Cell parameters γ

72.097(8)

Z

2

Volumne (ų)

833.297

Kristall structure

Neue Strukturaufklärung führt zu veränderter Formel, siehe I.V. Pekov, N.V. Zubkova, N.V. Chukanov, V.O. Yapaskurt, S.N. Britvin, A.V. Kasatkin, D.Y. Pushcharovky: Oyelite: new mineralogical data, crystal structure model and refined formula Ca5BSi4O13(OH)3⋅4H2O. European Journal of Mineralogy Vol. 31, Nr. 3 (2019) S. 595–608.

X-Ray Powder Diffraction

10.3(90),
4.92(20),
3.41(10),
3.06(50),
2.917(100),
2.812(40),
2.558(20),
2.043(20)
XRD chart Oyelite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

faserig, traubig

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.62

2.604 ( ρ calc. Mineralienatlas )

Fracture

faserig

Tenacity

spröde

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Japan/Honshu/Chugoku, Region/Okayama, Präfektur/Takahashi/Bitchu (Bicchu)/Fuka Mine

Preface

Author (Name, Year)

Kusachi & Henmi & Henmi, 1984

References

Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 79 (1984), 267

I.V. Pekov, N.V. Zubkova, N.V. Chukanov, V.O. Yapaskurt, S.N. Britvin, A.V. Kasatkin, D.Y. Pushcharovky: Oyelite: new mineralogical data, crystal structure model and refined formula Ca5BSi4O13(OH)3⋅4H2O. European Journal of Mineralogy Vol. 31, Nr. 3 (2019) S. 595–608.

Other languages

Spanish

Oyelita

English

Oyelite

French

Oyelite

German

Oyelith

Alternative Name

B-rich tobermorite

R.C. Erd, pers. comm. (1996)

Oyelit

Tobermorite-10Å

CNMNC (IMA)-Number

IMA 1980-103

CNMNC symbol

Symbol

Oye

Locations with GPS information