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Earlandite

Additional Functions

Collectors Summary

Color weiß, blassgelb
Streak color weiß
Solubility +++ verdünnte Säuren
Crystal System monoklin,

Chemism

Chemical formula

Ca3(C6H5O7)2·4H2O

Chemical composition

Calcium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 570.497346 u; Number of atoms in the formula: 51

Info

Empirical formula:

Ca3(C6H5O7)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.18

18

35.29

1.0079470

18.1430460
Carbon

C

25.26

12

23.53

12.0107800

144.1293600
Oxygen

O

50.48

18

35.29

15.9994300

287.9897400
Calcium

Ca

21.08

3

5.88

40.0784000

120.2352000

Strunz 9th edition incl. updates

10.AC.10

10: Organische Verbindungen
A: Salze organischer Säuren
C: Salze aromatischer Kohlenwasserstoffe
10:Earlandit-Gruppe

Lapis Classification

IX/A.02-030

IX: ORGANISCHE VERBINDUNGEN
A: Salze organischer Säuren
2: Andere organische Salze, u.a. Mellate, Citrate und Acetate

Classification by Hölzel

A.AB.300

A: ORGANIC COMPLEXES
A: Carbonacids and their Salts
B: Other Carbonacids
3: Carbonacids with C=3 to 6

Dana 8th edition

50.02.02.01

50: Organic Minerals
02: Salts of Organic Acids (Mellitates, Citrates, Cyanates, and Acetates)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß, blassgelb

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.065
Birefringence chart\! Earlandite title=Birefringence chart Earlandite

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

1.515

RI value β

1.530

RI value γ / ε

1.580

Ri mean

1.542

2V angle

Biaxial (+) 60°c

Dispersion

r > v

Crystallography

Crystal System

monoklin

Cell parameters a (Å)

30.94

Cell parameters b (Å)

5.93

Cell parameters c (Å)

10.56

Cell parameters a/b or c/a

5.218

Cell parameters c/b

1.781

Cell parameters α

90°

Cell parameters β

93.73°

Cell parameters γ

90°

Z

4

Volume (ų)

1933.383

X-Ray Powder Diffraction

15.5(100),
7.7(50),
5.2(30),
3.09(10)
XRD chart Earlandite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

1.95

1.96 ( ρ calc. Mineralienatlas )

Instability

+++ verdünnte Säuren

(Co-)Type locality

(Co-)Type locality

Antarktika/Westantarktis/Weddell-See/71°22'S; 16°34'W

Preface

Name from

Arthur Earland (1866-1958), britischer Ozeanograph

Author (Name, Year)

Bannister, 1936

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 198

Other languages

German

Earlandit

Spanish

Earlandita

French

Earlandite

English

Earlandite

Russian

Эрландит

CNMNC symbol

Symbol

Ear

IDs

GUSID (Global unique identifier short form) T8j3gCHuA0GYXTrQTmijgw
GUID (Global unique identifier) 80F7C84F-EE21-4103-985D-3AD04E68A383
Database ID 991