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Polyphite-VII (IMA 1990-025)

Collectors Summary

Color braun
Hardness (Mohs) 5
Crystal System triklin,

Chemism

Chem­ical formula

Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6

Chem­ical com­po­si­tion

Calcium, Magnesium, Mangan, Natrium, Silicium, Titan, Fluor, Phosphor, Sauerstoff

Unit weight: 1786.05801 u; Number of atoms in the formula: 81

Info

Empirical formula:

Na17Ca3Mg(Ti0.75Mn0.25)4[Si2O7]2(PO4)6O2F6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

35.83

40

49.38

15.9994300

639.9772000

Fluorine

F

6.38

6

7.41

18.9984033

113.9904195

Sodium

Na

21.88

17

20.99

22.9897702

390.8260934

Magnesium

Mg

1.36

1

1.23

24.3050600

24.3050600

Silicon

Si

6.29

4

4.94

28.0855300

112.3421200

Phosphorus

P

10.41

6

7.41

30.9737612

185.8425672

Calcium

Ca

6.73

3

3.70

40.0784000

120.2352000

Titanium

Ti

8.04

3

3.70

47.8671000

143.6013000

Manganese

Mn

3.08

1

1.23

54.9380499

54.9380499

Optical Properties

Color

braun

Crystallography

Crystal Sys­tem

triklin

Physical Properties

Hard­ness (Mohs)

5

References

American Mineralogist, Vol.78, p1316 (1993)

Other languages

German

Polyphit-VII

Spanish

Polyphita-VII

English

Polyphite-VII

IMA Number

IMA 1990-025

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

German pages

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

English pages

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

German pages

hausen - Mineralgroßhandel - search for: Polyphit-VII
Crystal-Treasure.com - search for: Polyphit-VII
Bosse - search for: Polyphit-VII



Notice: "Undefined variable: ub"