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Galliskiite

Collectors Summary

Hardness (Mohs) 2.5
Cleavages deutlich nach 90°, möglicherweise (010) und (001)
Fracture muschelig tounregelmäßig
Solubility ++ konzentrierte HCl
Crystal System triklin, P1

Chemism

Chemical formula

Ca4Al2(PO4)2F8·5H2O

Chemical composition

Aluminium, Calcium, Fluor, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 646.2834848 u; Number of atoms in the formula: 39

Info

Empirical formula:

Ca4Al2(PO4)2F8·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.56

10

25.64

1.0079470

10.0794700

Oxygen

O

32.18

13

33.33

15.9994300

207.9925900

Fluorine

F

23.52

8

20.51

18.9984033

151.9872260

Aluminium

Al

8.35

2

5.13

26.9815382

53.9630764

Phosphorus

P

9.59

2

5.13

30.9737612

61.9475224

Calcium

Ca

24.81

4

10.26

40.0784000

160.3136000

Analysis wt%

P2O5 : 21.94, Al2O3 : 15.92, CaO : 34.71, F : 21.35, H2O : 15.08 (Ref: American Mineralogist 2010)

Lapis Classification

VII/D.50-005

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

Classification by Hölzel

8.DM.720

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
M: P/OH<=1

IMA status

Anerkanntes Mineral - IMA-WEB-Seite, Neue Mineralien Aug 2009

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.027

Birefringence chart\! Galliskiite title=Birefringence chart Galliskiite

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

1.493

RI value β

1.495

RI value γ / ε

1.520

Ri mean

1.503

2V angle

Biaxial (+) 33°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

6.193

Cell parameters b (Å)

9.871

Cell parameters c (Å)

13.580

Cell parameters a/b or c/a

0.627

Cell parameters c/b

1.376

Cell parameters α

89.72

Cell parameters β

75.30

Cell parameters γ

88.68

Z

2

Volumne (ų)

802.774

Kristall structure

neuer Strukturtyp

X-Ray Powder Diffraction

7.904(70), 5.994(100), 3.280(58), 3.113(30), 2.945(82), 2.887(44), 2.262(27), 1.821(27)

XRD chart Galliskiite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.67 (berechnet)

2.674 ( ρ calc. Mineralienatlas )

Cleavages

deutlich nach 90°, möglicherweise (010) und (001)

Fracture

muschelig tounregelmäßig

Tenacity

spröde

Instability

++ konzentrierte HCl

Preface

Name from

Miguel Ángel Galliski, Mineraloge und Pegmatitspezialist aus Argentinien

Author (Name, Year)

Anthony R. Kampf, 2010

References

IMA-WEB-Seite, Neue Mineralien Aug 2009

Anthony R. Kampf, Fernando Colombo, William B. Simmons Jr., Alexander Falster, James W. Nizamoff (Feb. 2010) Galliskiite, Ca4Al2(PO4)2F8 x 5H2O, a new mineral from the Gigante granitic pegmatite, Cordoba province, Argentina

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Angastonite

CaMgAl2(PO4)2(OH)4·7H2O

triklin : 1 : P1

VII/D.50-003

Galliskiite

Ca4Al2(PO4)2F8·5H2O

triklin : 1 : P1

VII/D.50-005

Foggite

CaAl(PO4)(OH)2·H2O

orthorhombisch : 222 : A2122

VII/D.50-020

Krasnovite

Ba(Al,Mg)(PO4,CO3)(OH)2·H2O

orthorhombisch, orthorhombisch : mmm, mmm : Pnnn, Pnna

VII/D.50-025

Morinite

NaCa2Al2(PO4)2(F,OH)5·2H2O

monoklin : 2/m : P21/m

VII/D.50-030

Iangreyite

Ca2Al7(PO4)2(PO3OH)2(OH,F)15·8H2O

trigonal : 32 : P321

VII/D.50-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Skorpionite

Ca3Zn2(PO4)2CO3(OH)2·H2O

monoklin : 2/m : C2/c

8.DM.700

Galliskiite

Ca4Al2(PO4)2F8·5H2O

triklin : 1 : P1

8.DM.720

Other languages

German

Galliskiit

Spanish

Galliskiita

English

Galliskiite

Russian

Галлискиит

IMA Number

IMA 2009-038

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Galliskiit
Google-Bilder-Suche - search for: Galliskiit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Galliskiit

English pages

Mindat - search for: Galliskiite
Webmineral - search for:Galliskiite
Handbook-of-Mineralogy - search for: Galliskiite
RRUFF - Raman, XRD and other mineral data - search for: Galliskiite
RRUFF - References and PDF downloads - search for: Galliskiite
American-Mineralogist-Crystal-Structure-Database - search for: Galliskiite
Athena - search for: Galliskiite

Russian pages

Webmineral.ru - search for: Галлискиит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Galliskiit
Crystal-Treasure.com - search for: Galliskiit
Bosse - search for: Galliskiit

Locations with GPS information




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