Yunosawa mine, Ikarigaseki, Minamitsugaru District, Aomori Prefecture, Japan

Radial aggregates of tsugaruite (FoV = 6 mm). This rare lead arsenic mineral, tsugaruite, was found in Yunosawa Mine, Aomori pref., Japan. This is the other half piece of a type specimen (Tokyo University collection).

© R. Tanaka

Nicely formed gratonite from a rare Japanese locality. These crystals were found within barite veins associated with black sulfosalts and some dark brown wurtzite. In the image one can discover some of the irregular formed wurtzite scattered among dark minerals, also associated with some sulphur crystals.

Vein of silver lead-grey Tsugaruite running through matrix, associated with Baryte (overall 4.0 x 3.0 x 2.5 cm). EDX confirmed. From Alfredo Petrov. JF Carpentier specimen (#00694) and photographs.

© JF Carpentier 2007

2.0 x 0.8 x 0.5 cm. From the type locality. Metallic gray, granular to botryoidal tsugaruite accented by white baryte blades. Excellent thumbnail for the species. Ex. Paolo Matioli collection. Photos by Tom and Melissa Campbell.

© Rob Lavinsky & irocks.com

Radial aggregates of tsugaruite (FoV = 10 mm) with barite and wurtzite. Tokyo University collection.

© R. Tanaka

Gray metallic Jordanite F o v mm 3 x nn 2 Photo with Canon Eos 600 D + Bellows + Rodenstock Rodagon 35 mm 1:4,0 reversed processed by Helicon Focus and Filter Photo and collectin Giovanni Scapin

© Scapin Giovanni

Gray metallic Jordanite F o v mm 2 x mm 2,5 Photo with Canon Eos 600 D + Bellows + Rodenstock Rodagon 35 mm 1:4,0 reversed processed by Helicon Focus and Filter Photo and collectin Giovanni Scapin

© Scapin Giovanni

Small Tsugaruite specimen crystallized in a cavity. The photo measures 2.28mm, taken by my friend Gérard DUBOIS. Collection CLAUDE . jm (Exchange in 2015 with Hiromi Yamasaki)

© Dubois Gérard and CLAUDE. jm

2.0 x 0.8 x 0.5 cm. From the type locality. Metallic gray, granular to botryoidal tsugaruite accented by white baryte blades. Excellent thumbnail for the species. Ex. Paolo Matioli collection. Photos by Tom and Melissa Campbell.

© Rob Lavinsky & irocks.com

2.0 x 0.8 x 0.5 cm. From the type locality. Metallic gray, granular to botryoidal tsugaruite accented by white baryte blades. Excellent thumbnail for the species. Ex. Paolo Matioli collection. Photos by Tom and Melissa Campbell.

© Rob Lavinsky & irocks.com

Masses of silvery-black needles of tsugaruite crystals from the type locality. Specimen and photo, Chuck Adan.

© 2026 Chuck Adan

Tiny, black, columnar crystals, associated with crust-like to kidney-shaped dark brown Wurtzite. Its crystal structure is similar to Jordanite, and it is believed to be a product of its decomposition or formed at lower temperatures.

© NaturalismMinerals///天物矿晶