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Oxides and Hydroxides

Oxides and Hydroxides

245 results

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Cuprite

$225

Wheal Gorland, England

Classic specimen of intergrown lustrous maroon coloured 1-3 mm Cuprite crystals with a white vein-Quartz

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Bindheimite after Bournonite

$6,000

Felixbau Mine, Carinthia

A very rich and substantial specimen of intergrown deeply striated crystals of Bournonite measuring to 5 cm,

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Smoky Quartz

$4,500

St. Gotthard, Switzerland

An excellent single gem clear well terminated crystal of Smoky Quartz in great condition from the St. Gothard

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Magnetite

$7,500

Binn Valley, Switzerland

A fine old-time specimen with two old labels from the Binn Valley, Switzerland. Well-formed lustrous black

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Hematite

$3,500

N'Chwaning II Mine, South Africa

An excellent lustrous steeply pyramidal with pinacoid termination crystal of metallic black Hematite measuring

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Hematite

$1,000

Wessels Mine, South Africa

A bright metallic silvery-grey to black crystal of Hematite measuring to 3.7 cm displaying a pyramidal form

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Cuprite in Calcite with Native Copper

$800

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Colourless crystals of Calcite have a fine bright orange colour due to inclusions of Cuprite with later

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Rutile with Hematite

$1,500

Novo Horizonte, Brazil

A classic specimen of radial (Rose Diagram-like) platy lustrous metallic black Hematite with golden-yellow

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Lepidocrocite

$1,850

Siegen, North Rhine-Westphalia

Lustrous deep burnt orange-red micro-crystals of Lepidocrocite densely cover both sides of a gossan matrix

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Pseudomalachit-e

Pseudomalachite

$3,000

Ľubietová (Libethen), Banská Bystrica County

A Quartz plate attached to a vuggy mound of Quartz veinstone is richly coated with deep blue-green

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Manganite

$7,500

Ilfeld, Germany

A superb classic crystal specimen of Ilfeld Manganite. Excellent metallic black prismatic crystals of

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Cuprite coated by Malachite

$700

Andrássy II. Mine, Borsod-Abaúj-Zemplén Co.

A well-formed cubo-octahedral crystal of Cuprite measuring to 3 cm dominates the specimen coated by a

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Cuprite

$650

Fowey Consols, Cornwall

Bright red capillary crystals of Cuprite variety Chalcotrichite invest areas to 1 cm on a white Quartz gossan

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Hematite with Quartz

$450

Florence Mine, England

A pleasing west Cumbria specimen of platy crystals of black Specularite Hematite with intergrown

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Cuprite with Native Copper

$300

Wheal Gorland, England

Intergrown deep maroon lustrous octahedral crystals of Cuprite measuring to around 4 mm on areas of Native

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Cuprite

$1,300

Wheal Gorland, England

A very rich crystal specimen of intergrown lustrous octahedral deep maroon coloured Cuprite crystals

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Goethite

$340

Botallack Mine, England

A pleasing display of botryoidal Goethite with a sparkling druse surface, and well-defined internal

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Cassiterite

$250

Wheal Pendarves, England

A central cavity veinstone is lined with a druse of dark lustrous brown Cassiterite to around 4 mm with

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Ludlockite with Schneiderhöhnite

$2,000

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A terrific combination of a number of rare mineral species from the Tsumeb mine in Namibia. A roughly

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Hematite

$200

N'Chwaning II Mine, South Africa

A very fine, steely-silver Hematite crystal measuring 1.9 x 1.8 x 1.4 cm perched on a small sliver of matrix

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Cassiterite

$400

Mt Xuebaoding, China

An excellent lustrous twinned crystal of Cassiterite measuring to 2.2 cm sits at the apex of the Muscovite

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Anatase

$350

Zard Mtn, Balochistan

Five lustrous classic crystal habit Anatase measuring from 3 mm to 10 mm are pleasingly arranged on the

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Quartz Var. Eisenkiesel on Hematite

$300

Florence Mine, England

A delicate 1 to 2 mm thick plate of Hematite coated with micro-crystals of sparkling jet-black Specularite

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Cuprite

$350

Cornwall, England

An off-matrix, porous granular mass of lustrous Cuprite micro-crystals from Cornwall, England. Although

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Cassiterite

$400

Cornwall, England

A bed of reasonably well-developed black to clove-brown Cassiterite crystals richly coating the upper surface

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Rutile

$4,500

Brumado, Brazil

A now hard to find Rutile forming a long deep dark red metallic lustrous prismatic crystal measuring to 7 cm

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Bixbyite

$250

Thomas Range, Utah

Three lustrous black crystals of Bixbyite measuring to 5 mm associated with crystals of Topaz and Fluorite

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Hematite

$5,000

Wessels Mine, South Africa

A stunning group of mirror-bright, beautiful Hematite crystals from the Wessels manganese mine at Hotazel

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Valentinite with Kermesite

$950

Neue Hoffnung Gottes Mine, Germany

Broad bladed striated crystals of colourless-white Valentinite measuring in the 1 mm range are

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Whewellite

$400

Oberschlema, Saxony

White and pale grey crystals of the oxalate Whewellite form a curving parallel development with slopping

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Goethite

$450

Schönbrunn, Saxony

An intriguing specimen of Goethite from Saxony, Germany, having a compact columnar form with

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Cuprite with Chlorite

$1,200

Wheal Gorland, England

A rib of Chloritised gossany Quartz with an extremely vuggy and porous structure is richly invested with

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Cassiterite

$350

Goonbarrow China Clay Pit, England

Brownish-black partly corroded Cassiterite crystals up to about 0.9 cm are richly scattered over the flat

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Hematite Var. Kidney Ore

$200

Egremont, England

A really terrific large miniature of the botryoidal variety of Hematite known as Kidney Ore from the Egremont

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Crednerite

$3,000

Torr Works Quarry, England

This specimen of Crednerite, a rare copper-manganese oxide, was found in the manganese pods within the

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Hematite with Quartz

$450

Florence Mine, England

A 1 to 2 mm thick (yet strong) plate of Hematite is totally covered on opposite faces with jet-black, highly

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Cassiterite Var. “Wood Tin” with Quartz and Dolomite

$500

Cornwall, England

A very good example of the variety of Cassiterite known as “Wood Tin”, due to its concentric banded

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Crednerite with Hydrocerussite, Malachite and Calcite

$3,500

Torr Works Quarry, England

An excellent specimen of the rare copper-manganese oxide Crednerite from the famous Torr Works quarry at

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Goethite after Cerussite Pseudomorph Anglesite

$600

Broken Hill, Australia

A well-defined replacement of black-dark grey and red-brown Goethite after Cerussite white

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Gaudefroyite with Baryte and Andradite

$7,500

Black Rock Mine, Northern Cape

A rich crystal specimen of lustrous black Gaudefroyite crystals measuring to 9 mm with white Baryte and deep

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Sturmanite with Hausmannite

$1,600

N'Chwaning Mines, South Africa

A flat plate of cryptocrystalline Sturmanite is completely coated with flattened hexagonal pagoda-like

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Brunogeierite

$150

Carboire, Occitanie

Brunogeierite a rare Germanium-Iron Oxide as metallic grey areas intergrown with Sphalerite in a polished

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Cassiterite

$350

Bojewan Tin Stream Works, Cornwall

There is no disguising this specimen is an ugly brute, but it is a Cornish tin stream Cassiterite which makes

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Montgomeryite

$1,500

Tip Top Mine, USA

An excellent specimen of the very seldom encountered species Montgomeryite, a calcium-magnesium-aluminium

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Liroconite

$800

Wheal Gorland, England

A granular, large thumbnail matrix of iron-stained milky Quartz, is richly coated with intergrown blades of

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Cuprite with Cuprite var. Chalcotrichite

$500

Wheal Unity, Cornwall

Hackly intergrown granules of silvery deep-red Cuprite cover a porous brecciated Quartz veinstone. Richly

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Goethite with Quartz

$450

Restormel Royal Iron Mines, England

A beautifully aesthetic specimen of botryoidal Goethite forming undulating mid to dark chocolate-brown mounds

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Cassiterite

$1,500

Trevaunance Mine, Cornwall

A splendid bed of lustrous brownish-black Cassiterite crystals to 1.7 cm, covering a milky-Quartz fracture