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Polyphite-VII

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Formula:
Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6
Lustre:
Vitreous
Hardness:
5
Crystal System:
Triclinic
This page provides mineralogical data about Polyphite-VII.


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Physical Properties of Polyphite-VIIHide

Vitreous
Hardness:

Optical Data of Polyphite-VIIHide

Type:
Biaxial (-)
RI values:
nα = 1.600 nβ = 1.658 nγ = 1.676
Max Birefringence:
δ = 0.076
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v weak

Chemical Properties of Polyphite-VIIHide

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

Crystallography of Polyphite-VIIHide

Crystal System:
Triclinic

Synonyms of Polyphite-VIIHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Polyphite-VIIHide

Mineral and/or Locality  
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