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Lautarite (Lautarit)

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Lautarit
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1441661945
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Lautarit
Gelbe,faserige Lautarit xx in einer Matrix aus Nitratin und Halit; Yumbes Mine,Sierra Vicuna Mackenna,Paposo,Chile; BB: 5 mm
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Rockhounder
Location: Chile/Antofagasta, Region (II. Region)/Antofagasta, Provinz/Taltal/Reventon, Distrikt/Paposo/Yumbes Mine
Mineral: Lautarite
Image: 1441661945
License: Usage for Mineralienatlas project only
Lautarit  D

Gelbe,faserige Lautarit xx in einer Matrix aus Nitratin und Halit; Yumbes Mine,Sierra Vicuna Mackenna,Paposo,Chile; BB: 5 mm

Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2015-09-07
Locality: Yumbes Mine / Paposo / Reventon, Distrikt / Taltal / Antofagasta, Provinz / Antofagasta, Region (II. Region) / Chile

Collectors Summary

Color farblos, blassgelb
Streak color weiß
Hardness (Mohs) 3.50 - 4.00
Solubility +++ HCl, + H2O
Crystal System monoklin, P21/n

Chemism

Chemical formula

Ca(IO3)2

Chemical composition

Calcium, Iod, Sauerstoff

Unit weight: 389.883926 u; Number of atoms in the formula: 9

Info

Empirical formula:

Ca(IO3)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

24.62

6

66.67

15.9994300

95.9965800

Calcium

Ca

10.28

1

11.11

40.0784000

40.0784000

Iodine

I

65.10

2

22.22

126.9044730

253.8089460

Analysis wt%

CaO : 14.95, I2O5 : 85.04 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

4.KA.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
K: Iodate
A: Iodate ohne weitere [Anionen], ohne H20
05:Lautarit-Gruppe

Lapis Classification

IV/L.01-010

IV: OXIDE
L: Jodate
1: Jodate mit [IO3] 1--Gruppen

Classification by Hölzel

5.OA.300

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
O: Iodates
A: Iodates (-Anions -Water)

Dana 8th edition

21.01.01.01

21: Iodates - Anhydrous and Hydrated
01: Iodates - Anhydrous and Hydrated with miscellaneous formulae

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, blassgelb

Streak color

weiß

max. Birefringence

0.096

Birefringence chart\! Lautarite title=Birefringence chart Lautarite

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

1.792

RI value β

1.840

RI value γ / ε

1.888

Ri mean

1.840

2V angle

Biaxial (+) 90°~

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell parameters a (Å)

7.280

Cell parameters b (Å)

11.304

Cell parameters c (Å)

7.148

Cell parameters a/b or c/a

0.644

Cell parameters c/b

0.632

Cell parameters α

90°

Cell parameters β

106.37

Cell parameters γ

90°

Z

4

Volume (ų)

564.385

X-Ray Powder Diffraction

4.360(50),
3.493(60),
3.428(80),
3.336(40),
3.318(30),
3.156(100),
2.840(30),
2.012(30)

XRD chart Lautarite

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)

4.519 (gemessen)

4.588 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, + H2O

Preface

Author (Name, Year)

Dietze, 1891

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 393

Other languages

German

Lautarit

Spanish

Lautarita

French

Lautarite

English

Lautarite

Russian

Лаутарит

Alternative Name

Calcium Chromiodate

CNMNC symbol

Symbol

Ltr

IDs

GUSID (Global unique identifier short form) H2_WwVsm9U-WEmTNAWftDg
GUID (Global unique identifier) C1D66F1F-265B-4FF5-9612-64CD0167ED0E
Database ID 2153