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Spodiosite (Spodiosit)

Collectors Summary

Color bräunlichgrau
Streak color weiß
Hardness (Mohs) 5
Cleavages gut
Solubility +++ Säuren
Crystal System orthorhombisch,

Chemism

Chemical formula

Ca2[F|PO4]

Chemical composition

Calcium, Fluor, Phosphor, Sauerstoff

Unit weight: 194.12668445 u; Number of atoms in the formula: 8

Info

Empirical formula:

Ca2[FPO4]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

32.97

4

50.00

15.9994300

63.9977200
Fluorine

F

9.79

1

12.50

18.9984033

18.9984033
Phosphorus

P

15.96

1

12.50

30.9737612

30.9737612
Calcium

Ca

41.29

2

25.00

40.0784000

80.1568000

Classification by Hölzel

8.BP.200

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
P: Other Phosphates with large Cations
2: very large: 2 Spodiosite-Group

IMA status

Spodiosit ist ein Gemenge aus Fluorapatit, Calcit und Serpentin (vermutlich Pseudomorphosen nach einem unbekannten Primärminerl). Wurde Von der IMA in 2003 diskreditiert.

Optical Properties

Color

bräunlichgrau

Streak color

weiß

max. Birefringence

0.033
Birefringence chart\! Spodiosite title=Birefringence chart Spodiosite

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

1.663

RI value β

1.674

RI value γ / ε

1.699

Ri mean

1.679

2V angle

Biaxial (+) 69°c

Crystallography

Crystal System

orthorhombisch

Cell parameters a (Å)

6.048

Cell parameters b (Å)

6.765

Cell parameters c (Å)

10.716

Cell parameters a/b or c/a

0.894

Cell parameters c/b

1.584

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

438.442

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

Density (g/cm³)

2.94 (gemessen)

2.941 ( ρ calc. Mineralienatlas )

Cleavages

gut

Instability

+++ Säuren

Preface

Author (Name, Year)

Tiberg, 1872

Additional Information

References

IMA WEB Seite Veröffentlichung 2003 IMA-No. 03-B

Can.Min.,42, 2004, 912

Other languages

Spanish

Espodiosita

German

Spodiosit

French

Spodiosite

English

Spodiosite

Russian

Сподиозит

Alternative Name

Spanish

Spodiosita

CNMNC (IMA)-Number

IMA 2003-B

Locations with GPS information