Matveevite
A variety of Benyacarite
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Formula:
(H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2 · 14H2O
Lustre:
Vitreous
Crystal System:
Orthorhombic
Name:
Named for K. K. Matveev (1875-1954).
Unique Identifiers
Mindat ID:
7171 (as Matveevite)
6823 (as Benyacarite)
6823 (as Benyacarite)
Long-form identifier:
mindat:1:1:7171:6 (as Matveevite)
mindat:1:1:6823:5 (as Benyacarite)
mindat:1:1:6823:5 (as Benyacarite)
GUID
(UUID V4):
(UUID V4):
6727f4a1-1a73-4a53-b984-29662e748bc8 (as Matveevite)
ade49370-6dd9-43ce-8b69-a416983a18ca (as Benyacarite)
ade49370-6dd9-43ce-8b69-a416983a18ca (as Benyacarite)
IMA Classification of Matveevite
Discredited
Physical Properties of Matveevite
Vitreous
Optical Data of Matveevite
Type:
Biaxial (+)
RI values:
nα = 1.574 nβ = 1.580 nγ = 1.618
Max Birefringence:
δ = 0.044
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none
Chemistry of Matveevite
Mindat Formula:
(H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2 · 14H2O
Crystallography of Matveevite
Crystal System:
Orthorhombic
Other Language Names for Matveevite
German:Matveevit
Spanish:Matveevita
Other Information
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 Matveevite
mindat.org URL:
https://www.mindat.org/min-7171.html
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Please feel free to link to this page.
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