Brian Ahola's Gallery

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Adamite : Zn2(AsO4)(OH)
	Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico Typical clusters of adamite crystals on limonite from Ojuela Mine. Field of view is 9 mm. Processed with Helicon Focus. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 116136    View Count: 58
Annabergite : Ni3(AsO4)2·8H2O, Calcite : CaCO3
	Km-3 Mine, Lavrion Mines, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece Green annabergite crystals surrounded by calcite. Very difficult to photograph due to the calcite's color changing the hue of the green annabergite under bright light. Field of view is 5 mm. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 118131    View Count: 57
Annabergite : Ni3(AsO4)2·8H2O, Calcite : CaCO3
	Km-3 Mine, Lavrion Mines, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece Delicate annabergite crystals on calcite. Field of view is 11 mm. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 118132    View Count: 33
Arsenopyrite : FeAsS - (Fe0.90Co0.10)AsS, Sphalerite : (Zn,Fe2+)S
	Julcani Mine, Julcani District, Angaraes Province, Huancavelica Department, Peru Arsenopyrite crystals resting on barely-visible sphalerite. Field of view is 10 mm. Processed with Helicon Focus. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 115853    View Count: 45
Cacoxenite : Fe3+24Al[(OH)12|O6|(PO4)17] · 17H2O, Strengite : FePO4·2H2O
	Rock Run Station locality, Cherokee Co., Alabama, USA Cacoxenite sprays on matrix; associated transparent spheres are most probably strengite (see http://www.mindat.org/mesg-11-73080.html). Field of view is 4 mm. Processed with Helicon Focus. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 115655    View Count: 61
Calcite : CaCO3
	Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico Calcite on a limonite matrix. Minor green mimetite can be seen in the upper left. Field of view is 8 mm. Collection and photo: Brian Ahola
© Brian K. Ahola	Photo ID: 142254    View Count: 36
Chalcopyrite : CuFeS2, Dolomite : CaMg(CO3)2
	Tri-State District, Ottawa Co., Oklahoma, USA Nicely-formed iridescent chalcopyrite crystals on dolomite. Field of view is 8 mm. Processed with Helicon Focus. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 111303    View Count: 30
Childrenite : (Fe2+,Mn2+)Al[(OH)2|PO4] · H2O, Lazulite : (Mg,Fe2+)Al2[OH|PO4]2
	Rapid Creek, Dawson Mining District, Yukon Territory, Canada These rootbeer-colored blades appear in a small vug on a small cabinet specimen of lazulite and siderite. The dealer did not mention any species other than those two. All of the references I checked identified this as either childrenite or eosphorite (both are found at the locality). Based on photos in the Mineralogical Record, I am confident that ...
© Brian Ahola	Photo ID: 115654    View Count: 50
Conichalcite : CaCu[OH|AsO4], Calcite : CaCO3
	Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico Green conichalcite hosting transparent, colorless calcite. Field of view is 10 mm. Processed with Helicon Focus. Collection and photo: Brian Ahola
© Brian Ahola	Photo ID: 115854    View Count: 33
Cornetite : Cu3[(OH)3|PO4]
	Manto Ruso (Manto Russo) Mine, Mantoverde district, El Salado, Chañaral Province, Atacama Region, Chile Cornetite crystals lining a tiny vug on a micromount specimen. Field of view is 8 mm.
© Brian Ahola	Photo ID: 116407    View Count: 46

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