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Tychite (Tiquita)

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Tychit
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Tychit
Tychit als oktaedrische Einzelkristalle und Zwillinge nach dem Spinellgesetz in mm-Grösse; Searles Lake,Kalifornien
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Rockhounder
Location: USA/Kalifornien (California)/San Bernardino Co./Searles Lake
Mineral: Tychite
Image: 1479204897
License: Usage for Mineralienatlas project only
Tychit

Tychit als oktaedrische Einzelkristalle und Zwillinge nach dem Spinellgesetz in mm-Grösse; Searles Lake,Kalifornien
Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2016-11-15
Locality: Searles Lake / San Bernardino Co. / Kalifornien (California) / USA

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 3.50 - 4.00
Solubility +++ Säuren, - heißes H2O
Crystal System kubisch, Fd3

Chemism

Chemical formula

Na6Mg2(CO3)4(SO4)

Chemical composition

Magnesium, Natrium, Kohlenstoff, Sauerstoff, Schwefel

Unit weight: 522.6482412 u; Number of atoms in the formula: 29

Info

Empirical formula:

Na6Mg2(CO3)4(SO4)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Carbon

C

9.19

4

13.79

12.0107800

48.0431200
Oxygen

O

48.98

16

55.17

15.9994300

255.9908800
Sodium

Na

26.39

6

20.69

22.9897702

137.9386212
Magnesium

Mg

9.30

2

6.90

24.3050600

48.6101200
Sulfur

S

6.14

1

3.45

32.0655000

32.0655000

Analysis wt%

Na2O : 35.57, MgO : 15.80, SO3 : 15.07, CO2 : 33.50 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

5.BF.05

5: Carbonate (Carbonate, Nitrate)
B: Carbonate mit weitere Anionen, ohne H2O
F: Mit [Cl], SO4, P04
05:Northupit-Gruppe

Lapis Classification

V/C.03-020

V: NITRATE, CARBONATE UND BORATE
C: Wasserfreie Carbonate, mit fremden Anionen

Classification by Hölzel

5.BC.100

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
B: Carbonates (+Anions -Water)
C: Tychite-Bradleyite-Group

Dana 8th edition

17.01.01.01

17: Compound Carbonates
01: Compound Carbonates with miscellaneous formulae
01: Tychite Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

RI value α / ω / n

1.510

Ri mean

1.510

2V angle

Isotropisch

Optical Data Luminescence

Color LW-UV (365nm)

  

gelblich weiß

Color SW-UV (254nm)

  

gelblich weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

kubisch

Class (H-M)

m3

Space Group number

203

Space Group

Fd3

Cell parameters a (Å)

13.898

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

2684.46

X-Ray Powder Diffraction

4.18(80),
3.19(20),
2.67(100),
2.459(40),
2.349(20),
2.006(20),
1.736(20),
1.605(20)
XRD chart Tychite

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)

3.50 - 4.00

VHN (Hardness Vickers)

160 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.55 (gemessen)

2.586 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - heißes H2O

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/San Bernardino Co./Searles Lake

Preface

Author (Name, Year)

Penfield & Jamieson, 1905

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 710

Other languages

Spanish

Tiquita

German

Tychit

English

Tychite

French

Tychite

Russian

Тихит

Alternative Name

Spanish

Tychita

CNMNC symbol

Symbol

Tyc

Locations with GPS information

IDs

GUSID (Global unique identifier short form) I0L6RkBRl0SX7NKgIO5vzw
GUID (Global unique identifier) 46FA4223-5140-4497-97EC-D2A020EE6FCF
Database ID 3961