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Dashkovaite (Dashkovait)

Additional Functions

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 1
Cleavages keine
Fracture uneben
Solubility +++ H2O
Crystal System monoklin, P21/c

Chemism

Chemical formula

Mg[HCOO]2

Chemical composition

Magnesium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 114.340234 u; Number of atoms in the formula: 9

Info

Empirical formula:

Mg[HCOO]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.76

2

22.22

1.0079470

2.0158940
Carbon

C

21.01

2

22.22

12.0107800

24.0215600
Oxygen

O

55.97

4

44.44

15.9994300

63.9977200
Magnesium

Mg

21.26

1

11.11

24.3050600

24.3050600

Strunz 9th edition incl. updates

10.AA.10

10: Organische Verbindungen
A: Salze organischer Säuren
A: [Acetate]
10:Dashkovait-Gruppe

Lapis Classification

IX/A.02-003

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

Classification by Hölzel

A.AB.120

A: ORGANIC COMPLEXES
A: Carbonacids and their Salts
B: Other Carbonacids
1: Formiates

Dana 8th edition

50.02.06.02

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefringence

0.053
Birefringence chart\! Dashkovaite title=Birefringence chart Dashkovaite

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

1.467

RI value β

1.485

RI value γ / ε

1.520

Ri mean

1.491

2V angle

Biaxial (+) 81°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

8.64

Cell parameters b (Å)

7.15

Cell parameters c (Å)

9.38

Cell parameters a/b or c/a

1.208

Cell parameters c/b

1.312

Cell parameters α

90°

Cell parameters β

98.0

Cell parameters γ

90°

Z

4

Volume (ų)

573.82

X-Ray Powder Diffraction

5.45(40),
4.90(90),
4.64(80),
4.56(40),
4.30(70),
3.68(80),
3.40(100),
3.05(40)
XRD chart Dashkovaite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

1

Density (g/cm³)

1.74 (berechnet)

1.323 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

schneidbar

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Korshunovskoye (Korzunovskoe; Korzhunovska)

Preface

Author (Name, Year)

Chukanov & Belakovsky & Malinko & Organova, 2000

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 129 (2000) (6), 49

Other languages

German

Dashkovait

English

Dashkovaite

French

Dashkovaite

Spanish

Dashkovaíta

Russian

Дашковаит

CNMNC (IMA)-Number

IMA 2000-006

CNMNC symbol

Symbol

Dkv

IDs

GUSID (Global unique identifier short form) htsoUwivW0CQ8oOJ2uVwvw
GUID (Global unique identifier) 5328DB86-AF08-405B-90F2-8389DAE570BF
Database ID 888