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Bolivarite (Bolivarit)

Collectors Summary

Color gelbgrün, grünlichweiß
Streak color weiß
Hardness (Mohs) 2.50 - 3.00
Solubility +++ Säuren
Crystal System amorph,

Chemism

Chemical formula

Al2(OH)3(PO)4·4H2O

Chemical composition

Aluminium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 364.9392682 u; Number of atoms in the formula: 28

Info

Empirical formula:

Al2(OH)3(PO)4·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.04

11

39.29

1.0079470

11.0874170
Oxygen

O

48.23

11

39.29

15.9994300

175.9937300
Aluminium

Al

14.79

2

7.14

26.9815382

53.9630764
Phosphorus

P

33.95

4

14.29

30.9737612

123.8950448

Analysis wt%

UO3 : 0.40, Al2O3 : 36.60, P2O5 : 25.65, SiO2 : 0.54, H2O : 35.70 (Ref: Mineralogical Magazine 71)

Strunz 9th edition incl. updates

8.DE.15

8: Phosphate, Arsenate, Vanadate
D: Phosphate, mit weiteren Anionen, mit H2O
E: Mit ausschließlich mittelgroßen [Kationen], (OH, etc.):RO4 = 3:1
15:Bulachit-Gruppe

Lapis Classification

VII/D.55-005

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
D: Wasserhaltige Phosphate, mit fremden Anionen
55: Mittelgroße und sehr große Kationen: Al-Mg und Ca-Na-K

Classification by Hölzel

8.DC.330

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
C: Phosphates, Valency for mediumsized Cations: 3
3: OH/XO4 > 1.5 Fluellite-Group

IMA status

Status fragwürdig

Optical Properties

Color

gelbgrün, grünlichweiß

Streak color

weiß

RI value α / ω / n

1.50

RI value γ / ε

1.51

Ri mean

1.505

2V angle

u to Biaxial (+)

Optical Data Luminescence

Color LW-UV (365nm)

  

grün

LW-UV Intensity

stark

Color SW-UV (254nm)

  

grün

SW-UV Intensity

stark

Most Common Activator

(UO2)2+ (Uranyl-Ion) als Verunreinigungen

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

amorph

Cell parameters a (Å)

-

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

-

Cell parameters c/b

-

Cell parameters α

-

Cell parameters β

-

Cell parameters γ

-

Z

-

Volumne (ų)

-

Physical Properties

Hardness (Mohs)

2.50 - 3.00

VHN (Hardness Vickers)

113

Density (g/cm³)

2.01 (gemessen)

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Spanien/Galicien (Galicia)/Pontevedra, Provinz

Preface

Author (Name, Year)

Navarro & Barea, 1921

References

Canadian Mineralogist 33 (1995), 59

Other languages

German

Bolivarit

Spanish

Bolivarita

French

Bolivarite

English

Bolivarite

Russian

Боливарит

CNMNC symbol

Symbol

Bva

Locations with GPS information