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Senegalite

Pictures (16 Images total)

Senegalit
Views (File:
1268529481
): 1347
Senegalit
Bildbreite: 3 mm; Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal
Copyright: Jean-Marc Johannet; Contribution: Hg
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Senegalite
Image: 1268529481
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Senegalit

Bildbreite: 3 mm; Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal
Copyright: Jean-Marc Johannet
Contribution: Hg 2010-03-14
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal
Senegalit
Views (File:
1275728835
): 1291
Senegalit
Größe: 7,7 x 6,6 x 5,9 cm, Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal
Copyright: Fabre Minerals; Contribution: thdun5
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Senegalite
Image: 1275728835
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Senegalit

Größe: 7,7 x 6,6 x 5,9 cm, Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal
Copyright: Fabre Minerals
Contribution: thdun5 2010-06-05
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal
Senegalit
Views (File:
1363559800
): 1035
Senegalit
Mount Kourou Diakouma (Kouroudiako) bei Kedougou, Tambacounda (Region), Senegal, 44 x 35 x 25 mm
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Senegalite
Image: 1363559800
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Senegalit

Mount Kourou Diakouma (Kouroudiako) bei Kedougou, Tambacounda (Region), Senegal, 44 x 35 x 25 mm
Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2013-03-17
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal
Senegalit, Türkis
Views (File:
1227304032
): 1453, Rating: 7.17
Senegalit, Türkis
FO.: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Stufengröße: 10,5 x 7 cm
Copyright: Hrouda; Contribution: Hrouda
Collection: Museum für Naturkunde Gera
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Senegalite
Image: 1227304032
Rating: 7.17 (votes: 6)
License: Usage for Mineralienatlas project only
Senegalit, Türkis

FO.: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Stufengröße: 10,5 x 7 cm
Collection: Museum für Naturkunde Gera
Copyright: Hrouda
Contribution: Hrouda 2008-11-21
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal
Senegalit mit Augelith
Views (File:
1263405090
): 1923
Senegalit mit Augelith
Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Größe: 4,5 x 2 cm
Copyright: Mineralroli; Contribution: Mineralroli
Collection: Mineralroli
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Augelite, Senegalite
Image: 1263405090
Rating: 7.33 (votes: 3)
License: Usage for Mineralienatlas project only
Senegalit mit Augelith

Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Größe: 4,5 x 2 cm
Collection: Mineralroli
Copyright: Mineralroli
Contribution: Mineralroli 2010-01-13
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal
Senegalit
Views (File:
1263405048
): 470
Senegalit
Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Größe: 5 x 5 cm (Detail aus dem Bild: 1263404883)
Copyright: Mineralroli; Contribution: Mineralroli
Collection: Mineralroli
Location: Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte
Mineral: Senegalite
Image: 1263405048
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Senegalit

Fundort: Mount Kourou Diakouma bei Kedougou, Tambacounda (Region), Senegal; Größe: 5 x 5 cm (Detail aus dem Bild: 1263404883)
Collection: Mineralroli
Copyright: Mineralroli
Contribution: Mineralroli 2010-01-13
Locality: Kouroudiako Eisenlagerstätte / Saraya / Falémétal / Tambacounda, Region / Senegal

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, hellgelb
Streak color weiß
Hardness (Mohs) 5.5
Solubility +++ Säuren
Crystal System orthorhombisch, P21nb

Chemism

Chemical formula

Al2(PO4)(OH)3·H2O

Chemical composition

Aluminium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 217.9720126 u; Number of atoms in the formula: 16

Info

Empirical formula:

Al2(PO4)(OH)3·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.31

5

31.25

1.0079470

5.0397350
Oxygen

O

58.72

8

50.00

15.9994300

127.9954400
Aluminium

Al

24.76

2

12.50

26.9815382

53.9630764
Phosphorus

P

14.21

1

6.25

30.9737612

30.9737612

Analysis wt%

P2O5 : 31.83, Al2O3 : 46.23, H2O : 21.00 (Ref: Lithos 76)

Strunz 9th edition incl. updates

8.DE.05

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

Lapis Classification

VII/D.18-010

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
D: Wasserhaltige Phosphate, mit fremden Anionen
18: Mittelgroße Kationen: Cu-Zn-Mn-Al-Fe

Classification by Hölzel

8.DC.200

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

Dana 8th edition

42.06.07.01

42: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
06: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen where (AB)2 (XO4) Zq · x(H2O)
07: Senegalite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, hellgelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.025
Birefringence chart\! Senegalite title=Birefringence chart Senegalite

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

1.562

RI value β

1.566

RI value γ / ε

1.587

Ri mean

1.572

2V angle

Biaxial (+) 53°~

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

33

Space Group

P21nb

Cell parameters a (Å)

7.675

Cell parameters b (Å)

9.711

Cell parameters c (Å)

7.635

Cell parameters a/b or c/a

0.790

Cell parameters c/b

0.786

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

569.051

X-Ray Powder Diffraction

5.41(70),
4.089(90),
3.834(100),
3.610(80),
2.990(90),
2.348(80),
2.070(70),
1.929(70)
XRD chart Senegalite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.552

2.544 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Senegal/Tambacounda, Region/Falémétal/Saraya/Kouroudiako Eisenlagerstätte

Preface

Author (Name, Year)

Johan, 1976

References

Lithos 9 (1976), 165

Other languages

German

Senegalit

Spanish

Senegalita

English

Senegalite

French

Senegalite

Russian

Сенегалит

CNMNC (IMA)-Number

IMA 1975-004

CNMNC symbol

Symbol

Sng

IDs

GUSID (Global unique identifier short form) KlA69klHZEe16rqi54P8LQ
GUID (Global unique identifier) F63A502A-4749-4764-B5EA-BAA2E783FC2D
Database ID 3479