Pakhomovskyite (original) (raw)

A valid IMA mineral species

About PakhomovskyiteHide

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Crystal System:

Monoclinic

Name:

Named for Yakov Alekseevich Pakhomovsky (Яков Алексеевич Пахомовский) (b. 26 July 1948, Kandalaksha, Murmansk, Russia), who made significant contributions to the mineralogy of the alkaline massifs of the Kola Peninsula.

This page provides mineralogical data about Pakhomovskyite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:27472:6

7f17f19c-7d71-4b9c-ab97-b12f2f2a9e58

IMA Classification of PakhomovskyiteHide

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Type description reference:

Yakovenchuk, V. N., Ivanyuk, G. Yu., Mikhailova, Y. A., Selivanova, E. A., Krivovichev, S. V. (2006) Pakhomovskyite, Co3(PO4)2·8H2O, a new mineral species from Kovdor, Kola Peninsula, Russia. The Canadian Mineralogist, 44 (1) 117-123 doi:10.2113/gscanmin.44.1.117

Classification of PakhomovskyiteHide

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8.CE.40

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of PakhomovskyiteHide

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Density:

2.71 g/cm3 (Measured) 2.71 g/cm3 (Calculated)

Optical Data of PakhomovskyiteHide

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RI values:

_n_α = 1.581(2) _n_β = 1.600 - 2.000 _n_γ = 1.631(2)

2V:

Measured: 75° to 80°, Calculated: 77°

δ = 0.050

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Comments:

X = b, Y + c
pale pink on Y to pinkish grey on Z

Chemistry of PakhomovskyiteHide

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Mindat Formula:

Co3(PO4)2 · 8H2O

Common Impurities:

Mg,Mn,Ni,Fe

Crystallography of PakhomovskyiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 10.034(4) Å, b = 13.341(3) Å, c = 4.67(3) Å
β = 105.02(2)°

Ratio:

a:b:c = 0.752 : 1 : 0.35

Morphology:

Groups of small spherulites (up to 0.5 mm diameter) and rosettes (up to 0.05 mm diameter) of well-shaped tabular crystals.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Format: dobs/Å (Iobs/%) (hkl),
from type description

Geological EnvironmentHide

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Type Occurrence of PakhomovskyiteHide

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General Appearance of Type Material:

groups (up to 3 x 3 x 2 cm) of small spherulites (up to 0.5 mm diameter) and rosettes (up to 0.05 mm diameter) of tabular crystals, growing on walls of leached fissures in dolomitic carbonatite

Place of Conservation of Type Material:

The Mineralogical Museum, St. Petersburg State University, Russia.
The Geological and Mineralogical Museum, Geological Institute, Kola Science Center, Russian Academy of Sciences, Apatity, Russia.

Geological Setting of Type Material:

dolomite carbonatite cutting phosphorites

Associated Minerals at Type Locality:

Reference:

Yakovenchuk, V.N., Ivanyuk, G.Yu., Mikhailova, Yu, A., Selivanova, E.A., Krivovichev, S.V. (2006) Pakhomovskyite, Co3(PO4)2·8H2O, a new mineral species from Kovdor, Kola Peninsula, Russia. The Canadian Mineralogist: 44: 117-123.

Synonyms of PakhomovskyiteHide

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Other Language Names for PakhomovskyiteHide

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Simplified Chinese:水磷钴石

Traditional Chinese:水磷鈷石

Relationship of Pakhomovskyite to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of PakhomovskyiteHide

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Other InformationHide

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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 PakhomovskyiteHide

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References for PakhomovskyiteHide

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Reference List:

Yakovenchuk, V. N., Ivanyuk, G. Yu., Mikhailova, Y. A., Selivanova, E. A., Krivovichev, S. V. (2006) Pakhomovskyite, Co3(PO4)2·8H2O, a new mineral species from Kovdor, Kola Peninsula, Russia. The Canadian Mineralogist, 44 (1) 117-123 doi:10.2113/gscanmin.44.1.117

Localities for PakhomovskyiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.