Saul Krotki's Gallery

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Aegirine : NaFe3+Si2O6, Arfvedsonite : [Na][Na2][Fe2+4Fe3+][(OH)2|Si8O22]
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA Epitaxial aegirine terminations extending from arfvedsonite crystal. From the milepost 164 collecting area. Photomicrograph © Saul Krotki 2005 (.0684). Field of view left frame 3.0 mm. Right frame detail 1.0 mm. Mindat.org Photo of the Day - 24th Nov 2006
© Saul Krotki 2005	Photo ID: 31248    View Count: 1286
Aegirine : NaFe3+Si2O6, Bastnäsite-(Ce) : (Ce,La)[F|CO3], Quartz : SiO2
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA A radial burst of acicular aegirine crystals, (with amorphous iron silicate), attached to the apex of a quartz crystal. Associated with pink tabular Bastnäsite-(Ce), lower left. Photomicrograph © Saul Krotki 2006 (.0786.3). Field of view 1.8 mm wide. WA Pass milepost 166 field trip, June 2006. Krotki Mineral Collection. Mindat.org Photo of the Day - 8th Nov 2006
© Saul Krotki 2006	Photo ID: 71404    View Count: 804
Albite : Na[AlSi3O8], Quartz : SiO2, Microcline : KAlSi3O8
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA The feldspars in the miarolitic cavities at Washington Pass are prevalently, microcline. Albite often occurs as secondary epitaxy on the microcline. More unusual, is this isolated 2.0 mm stand up albite crystal, on microcline, with quartz. Photomicrograph © Saul Krotki (.0568). From a thumbnail specimen. Krotki Mineral Collection.
© Saul Krotki 2004	Photo ID: 17517    View Count: 856
Albite : Na[AlSi3O8]
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA Unusually transparent albite crystals capturing an interesting story of paragenesis. The green chlorites which are included within the albite, have subsequently oxidized to brown goethite outside the albites. WA Pass, mp 167.75. Meyer and Krotki field trip, October 2004. Photomicrograph © Saul Krotki 2004 (.0635.2). Field of view 3.0 mm in width.
© Saul Krotki 2004	Photo ID: 21767    View Count: 686
Albite : Na[AlSi3O8]
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA Albite overgrowth crystal on microcline. From the North Cascade Highway milepost 166 collecting area. Photomicrograph © Saul Krotki 2005 (.0750). Field of view 1.7 mm.
© Saul Krotki 2005	Photo ID: 46258    View Count: 502
Albite : Na[AlSi3O8], Zircon : ZrSiO4
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA Iron diffusion halo surrounding a cluster of flattened zircon crystals, on microcline overgrown with albite. The zircon has been verified by EDS analysis. Several minute, but very odd zircon clusters, have been found in boulders at the North Cascade Highway, milepost 165 avalanche chute. Photomicrograph © Saul Krotki 2010 (.1023). Field of view ...
© Saul Krotki 2010	Photo ID: 290632    View Count: 55
Allanite-(Ce) : {CaCe}{Al2Fe2+}[O|OH|SiO4|Si2O7], Riebeckite : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22]
	Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA A sharp Allanite-(Ce) crystal supported by fibrous riebeckite. From the Liberty Bell collecting area at 6150'. Photomicrograph © Saul Krotki 2004 (.0621.3). Field of view 1.2 mm. Krotki Mineral Collection.
© Saul Krotki 2004	Photo ID: 21079    View Count: 826
Amesite : Mg2Al[(OH)4|AlSiO5]
	Cerro Sapo, Ayopaya Province, Cochabamba Department, Bolivia Six-fold sector twinning is responsible for the creation of this distinctive field of stars made up of amesite crystal terminations. The specimen was acquired in Bolivia by Alfredo Petrov from a 1,000 year old pre-Inca sodalite mine. These crystals occur in shallow vugs in a sodalite matrix from an ankerite-sodalite-barite carbonatite dike. ...
© Saul Krotki 2004	Photo ID: 15288    View Count: 1015
Amesite : Mg2Al[(OH)4|AlSiO5]
	Cerro Sapo, Ayopaya Province, Cochabamba Department, Bolivia Six-fold sector twinning is responsible for the creation of this distinctive field of stars made up of amesite crystal terminations. The specimen was acquired in Bolivia by Alfredo Petrov from a 1,000 year old pre-Inca sodalite mine. These crystals occur in shallow vugs in a sodalite matrix from an ankerite-sodalite-barite carbonatite dike. ... Mindat.org Photo of the Day - 1st Feb 2006
© Saul Krotki 2004	Photo ID: 15289    View Count: 2915
Amesite : Mg2Al[(OH)4|AlSiO5]
	Cerro Sapo, Ayopaya Province, Cochabamba Department, Bolivia Amesite crystal terminations, 200 microns in diameter, exhibiting six-fold sector twinning. The crystal lengths are 500 microns. The specimen was acquired in Bolivia by Alfredo Petrov from a 1,000 year old pre-Inca sodalite mine. These crystals occur in shallow vugs in a sodalite matrix from an ankerite-sodalite-barite carbonatite dike. ...
© Saul Krotki 2004	Photo ID: 15294    View Count: 874

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