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Formicaite

Pictures (1 Images total)

Formicait
Views (File:
1578736891
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Formicait
weiße Massen von Formicait, Solongo, Burjatien, Russland, BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Vitim Plateau/Solongo Bor-Lagerstätte
Mineral: Formicaite
Image: 1578736891
License: Usage for Mineralienatlas project only
Formicait

weiße Massen von Formicait, Solongo, Burjatien, Russland, BB < 1 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-01-11
Locality: Solongo Bor-Lagerstätte / Vitim Plateau / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color weiß
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 1
Cleavages vollkommen {100}
Fracture abgestuft
Solubility +++ H2O
Crystal System tetragonal, P41212

Chemism

Chemical formula

Ca[HCOO]2

Chemical composition

Calcium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 130.113574 u; Number of atoms in the formula: 9

Info

Empirical formula:

Ca[HCOO]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.55

2

22.22

1.0079470

2.0158940

Carbon

C

18.46

2

22.22

12.0107800

24.0215600

Oxygen

O

49.19

4

44.44

15.9994300

63.9977200

Calcium

Ca

30.80

1

11.11

40.0784000

40.0784000

Strunz 9th edition incl. updates

10.AA.05

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

Lapis Classification

IX/A.02-005

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

Classification by Hölzel

A.AB.100

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

Dana 8th edition

50.02.06.01

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

IMA status

anerkannt 1998

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

Lustre

Glasglanz

max. Birefringence

0.020

Birefringence chart\! Formicaite title=Birefringence chart Formicaite

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

1.553

RI value γ / ε

1.573

Ri mean

1.560

2V angle

Uniaxial (+)

Optical Data Luminescence

Color SW-UV (254nm)

 

bläulich weiß

SW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

422

Space Group number

92

Space Group

P41212

Cell parameters a (Å)

6.77

Cell parameters b (Å)

-

Cell parameters c (Å)

9.46

Cell parameters a/b or c/a

1.397

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

433.579

X-Ray Powder Diffraction

5.54(90),
3.40(100),
3.19(60),
3.036(40),
2.859(80),
2.196(70),
2.046(50),
1.947(60)

XRD chart Formicaite

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

Physical Properties

Hardness (Mohs)

1

Density (g/cm³)

1.90 (gemessen)

1.993 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {100}

Fracture

abgestuft

Tenacity

spröde

Instability

+++ H2O

Preface

Name from

Nach der chemischen Zusammensetzung Formiate von Calcium

Author (Name, Year)

Zadov, 1999

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 128 (1999) (2), 43-47.

American Mineralogist 85 (2000), 1321.

Other languages

German

Formicait

Spanish

Formicaita

French

Formicaite

English

Formicaite

Russian

Формикаит

CNMNC (IMA)-Number

IMA 1998-030

CNMNC symbol

Symbol

Fmc

Locations with GPS information

IDs

GUSID (Global unique identifier short form) bTuLyJx_NEakglQ0jSiiIw
GUID (Global unique identifier) C88B3B6D-7F9C-4634-A482-54348D28A223
Database ID 1265