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Tashelgite

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Tashelgit
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Tashelgit

nahezu farblose Nadeln von Tashelgit, Tashelginskoye, Tashelga Fluss, Gornaya Shoria, Kemerowo, Russland; BB 3 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-20
Locality: Tashelginskoye / Tashelga, Fluss / Kemerowo, Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Crystal System monoklin, Pc

Chemism

Chem­ical formula

CaMgFe2+Al9O16(OH)

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Magnesium, Sauerstoff, Wasserstoff

Unit weight: 636.0607608 u; Number of atoms in the formula: 30

Info

Empirical formula:

CaMgFeAl9O16(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.16

1

3.33

1.0079470

1.0079470

Oxygen

O

42.76

17

56.67

15.9994300

271.9903100

Magnesium

Mg

3.82

1

3.33

24.3050600

24.3050600

Aluminium

Al

38.18

9

30.00

26.9815382

242.8338438

Calcium

Ca

6.30

1

3.33

40.0784000

40.0784000

Iron

Fe

8.78

1

3.33

55.8452000

55.8452000

Anal­y­sis wt%

Al2O3 : 70.70, Fe2O3 : 1.40, FeO : 11.32, MgO : 6.75, MnO : 0.45, CaO : 7.98, H2O : 1.80 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2011)

Strunz 9th edi­tion incl. updates

4

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)

Lapis Clas­sifica­tion

IV/B.10-010

IV: OXIDE
B: Oxide mit Verhältnis Metall zu Sauerstoff = 3:4 (Spinelltyp M3O4 und verwandte Verbindungen)

Clas­sifica­tion by Hölzel

4.BH.100

4: OXIDES
B: Spinels R3O4
H:

IMA sta­tus

anerkannt - CNMNC Newsletter, July 2010

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

max. Birefrin­gence

0.014

Birefringence chart\! Tashelgite title=Birefringence chart Tashelgite

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

1.736

RI value β

1.746

RI value γ / ε

1.750

Ri mean

1.744

2V angle

Biaxial (-) 20°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

m

Space Group number

7

Space Group

Pc

Cell param­e­ters a (Å)

5.697

Cell param­e­ters b (Å)

17.182

Cell param­e­ters c (Å)

23.572

Cell param­e­ters a/b or c/a

0.332

Cell param­e­ters c/b

1.372

Cell param­e­ters α

90°

Cell param­e­ters β

90.5

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

2307.277

Kristall struc­ture

neuer Strukturtyp, Struktur ermittelt

X-Ray Pow­der Diffrac­tion

11.79(48), 2.845(43), 2.616(100), 2.584(81), 2.501(39), 2.437(44), 2.406(61), 2.202(72)

XRD chart Tashelgite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

1.831 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Kemerowo, Oblast/Tashelga, Fluss/Tashelginskoye

Type mate­r­ial

Fersman Mineralogical Museum of the Russian Academy of Sciences

Col­lec­tion number of type mate­r­ial

3983/1

Preface

Name from

Ananyev, S.A., Konovalenko, S.I., Rastsvetaeva, R.K., Aksenov, S.M., Chukanov, N.V., Sapozhnikov, A.N. and Zagorskii, V.E. (2010)

Author (Name, Year)

Ananyev, S.A., Konovalenko, S.I., Rastsvetaeva, R.K., Aksenov, S.M., Chukanov, N.V., Sapozhnikov, A.N. and Zagorskii, V.E. (2010)

References

Rastsvetaeva, R.K., Aksenov, S.M., Verin, I.A. (2010), Crystal structure of complex natural aluminum magnesium calcium iron oxide. Crystallography Reports,55, 563-568.

Ananyev, S.A., Konovalenko, S.I., Rastsvetaeva, R.K., Aksenov, S.M., Chukanov, N.V., Sapozhnikov, A.N. and Zagorskii, V.E. (2010) Tashelgite, IMA 2010-017. CNMNC Newsletter, August 2010, page 798; Mineralogical Magazine, 74, 797-800

Detailed description

Typlokalität in der Tashelginskoye Formation

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Tashelgite

CaMgFe2+Al9O16(OH)

monoklin : m : Pc

IV/B.10-010

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Tashelgite

CaMgFe2+Al9O16(OH)

monoklin : m : Pc

4.BH.100

Alternative Name

Lodochnikovite (of Nefedov)

CNMNC (IMA)-Number

IMA 2010-017

CNMNC symbol

Symbol

Thg

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Tashelgit
Google-Bilder-Suche - search for: Tashelgit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Tashelgit

English pages

Mindat - search for: Tashelgite
Webmineral - search for:Tashelgite
Handbook-of-Mineralogy - search for: Tashelgite
RRUFF - Raman, XRD and other mineral data - search for: Tashelgite
RRUFF - References and PDF downloads - search for: Tashelgite
American-Mineralogist-Crystal-Structure-Database - search for: Tashelgite
Athena - search for: Tashelgite

Russian pages

Webmineral.ru - search for: Ташелгит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Tashelgit
Crystal-Treasure.com - search for: Tashelgit
Bosse - search for: Tashelgit

Locations with GPS information