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Frolovite (Frolovit)

Pictures (1 Images total)

Frolovit
Views (File:
1584800626
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Frolovit
weiße, plattige Massen von Frolovit, Solongo Bor-Lagerstätte, Vitim Plateau, Burjatien, Russland; BB ~ 2 cm
Copyright: Joy Desor; Contribution: openpit
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Vitim Plateau/Solongo Bor-Lagerstätte
Mineral: Frolovite
Image: 1584800626
License: Usage for Mineralienatlas project only
Frolovit

weiße, plattige Massen von Frolovit, Solongo Bor-Lagerstätte, Vitim Plateau, Burjatien, Russland; BB 2 cm
Copyright: Joy Desor
Contribution: openpit 2020-03-21
Locality: Solongo Bor-Lagerstätte / Vitim Plateau / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color weißgrau
Streak color weiß
Hardness (Mohs) 3.5
Solubility +++ Säuren, - H2O
Crystal System triklin, P1

Chemism

Chemical formula

CaB2(OH)8

Chemical composition

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 197.760816 u; Number of atoms in the formula: 19

Info

Empirical formula:

CaB2(OH)8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

4.08

8

42.11

1.0079470

8.0635760
Boron

B

10.93

2

10.53

10.8117000

21.6234000
Oxygen

O

64.72

8

42.11

15.9994300

127.9954400
Calcium

Ca

20.27

1

5.26

40.0784000

40.0784000

Analysis wt%

B2O3 : 35.20, CaO : 28.36, H2O : 36.44 (Ref: berechnet)

Strunz 9th edition incl. updates

6.AC.20

6: Borate
A: Monoborate
C: B(O,OH)4, ohne und mit zusätzlichen [Anionen]; 1(T), 1(T)+OH, etc.
20:Frolovit-Gruppe

Lapis Classification

V/G.09-010

V: NITRATE, CARBONATE UND BORATE
G: Inselborate
9: [BO4] 5-- und [B(OH)4] 1--Tetraeder

Classification by Hölzel

6.AC.230

6: Borates
A: Monoborates
C:
2: Frolovite-Hexahydroborite-Group (heterotypes)

Dana 8th edition

25.01.03.01

25: Anhydrous Borates Containing Hydroxyl or Halogen
01: Anhydrous Borates Containing Hydroxyl or Halogen

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

weißgrau

Streak color

weiß

max. Birefringence

0.014
Birefringence chart\! Frolovite title=Birefringence chart Frolovite

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

1.572

RI value β

1.578

RI value γ / ε

1.586

Ri mean

1.579

2V angle

Biaxial (+) 75°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.774

Cell parameters b (Å)

5.680

Cell parameters c (Å)

8.136

Cell parameters a/b or c/a

1.369

Cell parameters c/b

1.432

Cell parameters α

113.15

Cell parameters β

101.67

Cell parameters γ

107.87

Z

2

Volume (ų)

292.206

X-Ray Powder Diffraction

6.15(100),
3.831(80),
3.611(50),
3.475(80),
2.647(50),
2.518(60),
2.510(50),
2.339(40)
XRD chart Frolovite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5

VHN (Hardness Vickers)

168 (25g)

Density (g/cm³)

2.14 (gemessen)

2.248 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

(Co-)Type locality

(Co-)Type locality

Russland/Ural, Föderationskreis/Swerdlowsk (Sverdlovskaya, Sverdlovsk), Oblast/Tur'insk-Auerbakovsk Erzfeld/Krasnoturjinsk/Turya, Fluss/Turjinsk/Novofrolovskoye B-Cu-Lagerstätte

Preface

Author (Name, Year)

Petrova, 1957

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 86 (1957), 622

Other languages

German

Frolovit

Spanish

Frolovita

English

Frolovite

French

Frolovite

Russian

Фроловит

Alternative Name

German

Frolowit

Spanish

Frolowita

Frolowite

CNMNC symbol

Symbol

Flv

Locations with GPS information

IDs

GUSID (Global unique identifier short form) kZuHFwodXka9wjYCgxRsYQ
GUID (Global unique identifier) 17879B91-1D0A-465E-BDC2-360283146C61
Database ID 1298