Garnierite from USA

6UR-914Garnierite, Quartz SiO₂

Adams Brook nickel prospect, Newfane, Windham County, Vermont, USA

Field of View: 7 mm

Greenish-yellow quartz crystals colored by green garnierite inclusions.

1UM-P55Garnierite

Webster-Balsam, Jackson County, North Carolina, USA

Dimensions: 7.8 cm x 5.4 cm x 4.5 cm

7.8 x 5.4 x 4.5 cm. Garnierite is the name for a green nickel ore which is found in pockets and fissures of weathered ultramafic rocks (serpentinite, dunite, peridotite). It forms by lateritic weathering of ultramafic rocks; it consists of the magnesium-rich phyllosilicates serpentine, talc, chlorite and smectite in which a high percentage of magnesium is substituted by nickel. This is an old-time specimen from mining in North Carolina.

EGK-A7QGarnierite

Puerto Rico, USA

Dimensions: 5.5 cm x 4.1 cm x 2.8 cm

5.5 x 4.1 x 2.8 cm. Very rare garnierite from Puerto Rico, from where specimens of any type are rare. Garnierite is a generic name and synonym for nepouite, pimelite and willemseite, rare green nickel ores which formed as a result of lateritic weathering of ultramafic rocks (serpentinite, dunite, peridotite). They occur in many nickel laterite deposits in the world (MINDAT). This is a solid blocky mass of mottled green garnierite. Rare, perhaps unique material collected in the 1940s. Ex David Burgess Collection, for whom Burgessite is named. Acquired from respected rarities dealer Pequa Minerals (Josef Vajdak). From Corozal, a locality not listed in Mindat. Garnierite is not listed for any locality in Puerto Rico.

D47-0XWGarnierite

Riddle Mine, Riddle, Riddle Mining District, Douglas County, Oregon, USA

Dimensions: 8.56 cm x 6.13 cm x 2.45 cm

Exceptionally rich mass of garnierite with obvious slickenside surface--also present to a lesser extent on the backside. Collected by Erich Laskowski (1949-2020) of Tucson, Arizona.

M1M-269Garnierite

Riddle Mine, Riddle, Riddle Mining District, Douglas County, Oregon, USA

Field of View: 13 mm

Green garnierite. Former John Sinkankas collection from Ward's Scientific with old label. Rolf Luetcke specimen and photo.

WRR-92NGarnierite

Washington, USA

Dimensions: 6 cm x 3 cm

Green, botryoidal garnierite. Purchased at the Arizona Sonoran Desert Museum sale but only Washington state was listed for the location. Rolf Luetcke specimen and photo.

D6X-EA0Garnierite, Pecoraite Ni₃(Si₂O₅)(OH)₄

Riddle Mine, Riddle, Riddle Mining District, Douglas County, Oregon, USA

Dimensions: 2.5 cm x 1.5 cm x 1.5 cm

Bright green massive Garnierite (Nepouite) and bright blue-green Pecoraite are associated on this nice representative specimen, typical of the locality, with a tiny open vug in the center of the specimen.
Personal collection of Sharon Cisneros.

96K-UAWGarnierite

Riddle Mine, Riddle, Riddle Mining District, Douglas County, Oregon, USA

Dimensions: 45 mm x 29 mm x 7 mm

Botryoidal garnierite with no other matrix, JSS specimen and photo.

JWW-DMLGarnierite

Adams Brook nickel prospect, Newfane, Windham County, Vermont, USA

Dimensions: 1 inches x 1 inches x 1 inches

Dimensions: 1" x 1" x 1"

Crumbly chunk of green-blue garnierite.

YRE-Y4WGarnierite, Quartz (Var: Chalcedony) SiO₂

Nickel Mountain, Riddle Mining District, Douglas County, Oregon, USA

Dimensions: 3 inches x 2 inches x 1 inches

Dimensions: 3" x 2" x 1" thick.

Slab of porcelainesque lime green chalcedony, the color due to the presence of garnierite (or pimelite according to the seller). Thus this is chrysoprase, which is chalcedony + Ni bearing silicates.