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Pavel Kartashov's Photo Gallery

CA3-HN2Spinel (Var: Pleonaste), Diopside, Calcite, Phlogopite

Gon phlogopite deposit, Aldan, Aldan Shield, Sakha Republic, Russia

Field of View: 10 cm

Complex crystal (octahedron modified by rhombododecahedron and trigontrioctahedron) of black Spinel (var. Pleonaste) with miror faces within magnesial skarn matrix, composed by greenish Diopside, orange-pink Calcite and minor brown Phlogopite (mainly at the back side).
For size look at ruler.
Pavel M. Kartashov collection, Sibmin photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 950685     Uploaded by: Pavel Kartashov   View Count: 5   Approval status: Public galleries    Type: Photo - 657 x 600 pixels (0.4 Mpix)

URH-H8MGahnite, Calcite

Multiple photos available
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Dimensions: 7 cm x 6 cm x 2.5 cm
Largest Crystal Size: 2 cm

Octahedrons up to 2 cm in edge of very dark olive-green Gahnite (var. Dysluite) within white Calcite (fluorescenting red).
Pavel M. Kartashov collection and scan.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 950158     Uploaded by: Pavel Kartashov   View Count: 18   Approval status: Public galleries    Type: Photo - 2618 x 2282 pixels (6.0 Mpix)

29V-VUDPlatinum (Var: Polyxene), Isoferroplatinum, Gold, Magnesiochromite

Multiple photos available
Goodnews Bay, Bethel Census Area, Alaska, USA

Field of View: 12.5 mm

Portion of heavy concentrate mainly composed by wrought and waterworn, flattened grains of far transportation of Ferroplatinum of different composition, black crystals of Magnesiochromite and yellow grains of native Gold less far transported by water stream than platinum.
Ferroplatinum is represented here by two inrecognizable by naked eye minerals - Polyxene and Isoferroplatinum. Polyxene has composition Pt 92.05/92.75, Pd 0.75/0.50, Fe 5.83/6.02, Cu 1.29/0.50 mas.%, what may to be expressed by formulae (Pt0.78Fe0.17Cu0.03Pd0.01) / (Pt0.80Fe0.18Cu0.01Pd0.01). This is low ferroan Polyxene, what is unusual. May be it is of secondary origin and was formed during oxidation of iron from Isoferroplatinum.
Isoferroplatinum has composition Pt 87.53/88.84, Ir 1.99/0.64, Rh 0.48/0.00, Pd 0.35/0.20, Fe 9.03/9.75, Cu 0.63/0.57 mas.%, what may to be expressed by formulae (Pt2.81Ir0.07Cu0.06Rh0.03Pd0.02)2.99Fe1.01 / (Pt2.84Cu0.04Ir0.04)2.92Fe1.08.
Due to different iron contents in these two minerals, they able to be separated by magnites.
The brightmost rare tin-white grains are native Iridium with composition (Ir0.86Os0.10Ru0.03Pt0.01).
Invisible at the photo minerals of the concentrate are represented by black Laurite and Erlichmanite crystals, Pyrite, Zircon, Magnetite crusts over Magnesiochromite crystals.
Pavel M. Kartashov analytical data, collection and photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 949126     Uploaded by: Pavel Kartashov   View Count: 38   Approval status: Public galleries    Type: Photo - 1999 x 1499 pixels (3.0 Mpix)

J12-A0TIsoferroplatinum

Goodnews Bay, Bethel Census Area, Alaska, USA

Field of View: 314 μm

SEM image of well formed, but small, octahedral (modified by cube) crystal of Isoferroplatinum from weak magnetic fraction of heawy concentrate.
The crystal has composition Pt 88.84, Ir 0.64, Pd 0.20, Fe 9.75, Cu 0.57 mas.%, what may to be expressed by formulae (Pt0.71Fe0.27Cu0.01Ir0.01) or (Pt2.84Cu0.04Ir0.04)2.92Fe1.08.
Pavel M. Kartashov analytical data, collection and photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 949119     Uploaded by: Pavel Kartashov   View Count: 11   Approval status: Public galleries    Type: Photo - 1126 x 844 pixels (1.0 Mpix)

Peter H. Nixon

Peter H. Nixon (b. 1935), Professor of Mantle Geology at Leeds University, UK.
Copyright: © Chiara Anzolini      Photo ID: 947838     Uploaded by: Pavel Kartashov   View Count: 9   Approval status: User gallery    Type: Photo - 3024 x 4032 pixels (12.2 Mpix)

M1R-L5LDalnegorskite, Hedenbergite

Multiple photos available
Bor Pit, Dal'negorsk B deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia

Dimensions: 16 cm x 9 cm x 4 cm

The rock mainly composed by layers of compact fibrous creamy Dalnegorskite with minor layers of dark-green prismatic Hedenbergite.
Selfcollected at the lower horizonts of the quarry in August of 1990. Dalnegorskite forms here as intermediate product at the front of metasomatic replacement of earlier Wollastonite by late formed Bustamite (which both able presented in the sample as minor components of Dalnegorskite layers).
Pavel M. Kartashov collection and scan.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 946887     Uploaded by: Pavel Kartashov   View Count: 21   Approval status: Public galleries    Type: Photo - 2627 x 2050 pixels (5.4 Mpix)

KJE-146Dalnegorskite, Hedenbergite, Datolite

Multiple photos available
Bor Pit, Dal'negorsk B deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia

Dimensions: 11 cm x 7 cm x 3 cm

The rock mainly composed by layers of compact fibrous creamy Dalnegorskite with minor inclusions of green Hedenbergite and light-green to greyish-green Datolite.
Selfcollected at the lower horizonts of the quarry in August of 1990.
Pavel M. Kartashov collection and scan.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 946883     Uploaded by: Pavel Kartashov   View Count: 23   Approval status: Public galleries    Type: Photo - 2040 x 1691 pixels (3.4 Mpix)

8EW-LUFGahnite, Sphalerite (Var: Cleiophane), Quartz

Multiple photos available
Victoria Mine, Arres, Aran valley, Lleida, Catalonia, Spain

Dimensions: 27 mm x 17 mm x 12 mm

Octahedral crystals of Gahnite in Quartz rock with minor yellow Sphalerite (var. Cleiophane).
Collected by Joan Abella Creus 8 August 2000.
Pavel M. Kartashov collection and scan.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 946765     Uploaded by: Pavel Kartashov   View Count: 17   Approval status: Public galleries    Type: Photo - 1520 x 1280 pixels (1.9 Mpix)

CND-V3DHeulandite-Ca, Mordenite, Celadonite

Multiple photos available
Berufjord, Djúpavogshreppur, Eastern Region, Iceland

Dimensions: 7.5 cm x 5.5 cm x 4 cm

Half of amygdala from basalt filled by crystals of Heulandite-Ca. Its outer layer composed by tobacco-coloured layer of Celadonite filled by perly fibres of Mordenite.
Excollection of Tiegerhorn (#8).
Pavel M. Kartashov collection and scan.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 946741     Uploaded by: Pavel Kartashov   View Count: 8   Approval status: Public galleries    Type: Photo - 2112 x 1612 pixels (3.4 Mpix)

QPE-935Kyrgyzstanite, Allophane

Kara-Tangi U deposit, Batken, Kyrgyzstan

Field of View: 500 μm

SEM image in reflected electrons. Tabular crystals of Kyrgyzstanite covered by minor globular Allophane aggregates.
Vladimir Karpenko photo of the holotype material.
Copyright: © Pavel M. Kartashov      Photo ID: 945342     Uploaded by: Pavel Kartashov   View Count: 138   Approval status: Public galleries    Type: Photo - 1024 x 1024 pixels (1.0 Mpix)
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