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Aksaite (Аксаит)

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Aksait
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Aksait

weiße Aggregate von Aksait, Chelkar Salzlagerstätte, Aksai, Aqtöbe, Kasachstan; BB 1 cm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-05
Locality: Chelkar Salzdom / Aksai / Aqtöbe, Gebiet (Aqtöbe oblysy) / Kasachstan

Collectors Summary

Color hellgrau
Streak color weiß
Hardness (Mohs) 2.5
Solubility +++ HCl, - H2O
Crystal System orthorhombisch, Pbca

Chemism

Chem­ical formula

MgB6O7(OH)6·2H2O

Chem­ical com­po­si­tion

Magnesium, Bor, Sauerstoff, Wasserstoff

Unit weight: 339.24618 u; Number of atoms in the formula: 32

Info

Empirical formula:

MgB6O7(OH)6·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.97

10

31.25

1.0079470

10.0794700

Boron

B

19.12

6

18.75

10.8117000

64.8702000

Oxygen

O

70.74

15

46.88

15.9994300

239.9914500

Magnesium

Mg

7.16

1

3.13

24.3050600

24.3050600

Anal­y­sis wt%

B2O3 : 61.56, MgO : 11.88, H2O : 26.55 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

6.FA.05

6: Borate
F: Hexaborate
A: Insel(Neso)-Hexaborate
05:Aksait-Gruppe

Lapis Clas­sifica­tion

V/H.17-030

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
17: Planare und tetraedrische Gruppen [B3O5] 1- bis [B6O10] 2-

Clas­sifica­tion by Hölzel

6.FA.100

6: Borates
F: Hexaborates
A: Nesohexaborates
1: Aksaite-Group - 6(3P+3T)

Dana 8th edi­tion

26.06.04.01

26: Hydrated Borates Containing Hydroxyl or Halogen
06: Hydrated Borates Containing Hydroxyl or Halogen

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

hellgrau

Streak color

weiß

max. Birefrin­gence

0.054

Birefringence chart\! Aksaite title=Birefringence chart Aksaite

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

1.472

RI value β

1.503

RI value γ / ε

1.526

Ri mean

1.500

2V angle

Biaxial (-) 80°

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

61

Space Group

Pbca

Cell param­e­ters a (Å)

12.54

Cell param­e­ters b (Å)

24.35

Cell param­e­ters c (Å)

7.484

Cell param­e­ters a/b or c/a

0.515

Cell param­e­ters c/b

0.307

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

2285.232

X-Ray Pow­der Diffrac­tion

6.4(100),
6.3(30),
6.1(50),
4.72(50),
4.37(20),
3.59(30),
3.19(50),
3.11(50)

XRD chart Aksaite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.99 (gemessen)

1.972 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl, - H2O

Preface

Author (Name, Year)

Blazko & Kondrat'eva & Yarzhemskiy, 1962

References

American Mineralogist 48 (1963), 930

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Aksaite

MgB6O7(OH)6·2H2O

orthorhombisch : mmm : Pbca

6.FA.05

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

Admontite

MgB6O10·7H2O

monoklin : 2/m : P21/c

V/H.17-010

Mcallisterite

Mg2B12O14(OH)12·9H2O

trigonal : 3m : R3c

V/H.17-020

Aksaite

MgB6O7(OH)6·2H2O

orthorhombisch : mmm : Pbca

V/H.17-030

Rivadavite

Na6MgB24O40·22H2O

monoklin : 2/m : P21/c

V/H.17-040

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

Aksaite

MgB6O7(OH)6·2H2O

orthorhombisch : mmm : Pbca

6.FA.100

Mcallisterite

Mg2B12O14(OH)12·9H2O

trigonal : 3m : R3c

6.FA.120

Admontite

MgB6O10·7H2O

monoklin : 2/m : P21/c

6.FA.130

Rivadavite

Na6MgB24O40·22H2O

monoklin : 2/m : P21/c

6.FA.160

Braitschite-(Ce)

(Ca,Na2)7(Ce,La)2B22O43·7H2O

hexagonal : 6/m : P6/m

6.FA.180

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Rivadavite

Na6MgB24O40·22H2O

monoklin : 2/m : P21/c

26.06.01.01

Mcallisterite

Mg2B12O14(OH)12·9H2O

trigonal : 3m : R3c

26.06.02.01

Admontite

MgB6O10·7H2O

monoklin : 2/m : P21/c

26.06.03.01

Aksaite

MgB6O7(OH)6·2H2O

orthorhombisch : mmm : Pbca

26.06.04.01

Aristarainite

Na2MgB12O20·10H2O

monoklin : 2/m : P21/a

26.06.05.01

Nobleite

CaB6O9(OH)2·3H2O

monoklin : 2/m : P21/a

26.06.06.01

Tunellite

SrB6O9(OH)2·3H2O

monoklin : 2/m : P21/a

26.06.06.02

Ginorite

Ca2B14O23·8H2O

monoklin : 2/m : P21/a

26.06.07.01

Strontioginorite

(Sr,Ca)2B14O23·8H2O

monoklin : 2/m : P21/a

26.06.07.02

Other languages

German

Aksait

English

Aksaite

French

Aksaite

Spanish

Aksaíta

Russian

Аксаит

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Аксаит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Aksait
Bosse - search for: Aksait



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