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Oxides and Hydroxides

142 results

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Cuprite with Dolomite and Mimetite

$700

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A stunning and very rich specimen of Cuprite from the Tsumeb mine with crystals and platy crystalline areas

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Cuprian Adamite

$5,000

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Large intergrown lustrous crystals, to about 7 mm across, of Cuprian Adamite, cover the surface of a

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Cuprite included in Dolomite and Cerussite

$450

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A druse of lustrous Dolomite crystal displays extensive areas included by red Cuprite with scattered crystals

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Franklinite with Calcite

$1,500

Franklin, USA

Two well-formed octahedral black classic crystals of Franklinite measuring to 1.3cm with many more smaller

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Zincite

$1,250

Franklin, New Jersey

A large and somewhat rounded crystal of opaque red-brown Zincite measuring to 3.5cm partly enclosed

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Manganite

$2,000

Ilfeld, Germany

Manganite from Ilfeld in the Harz district of Germany is regarded as one of the world’s most iconic minerals

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Anatase

$1,500

Kharan District, Balochistan

Four excellent metallic black lustrous crystals of Anatase have great form, measuring to 9mm on a contrasting

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Paradamite

$1,000

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A choice large thumbnail specimen of the zinc arsenate hydroxide Paradamite; a very rare species from the

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Arsentsumebite ps. after Mimetite with Azurite, Gartrellite, Olivenite and Malachite ps. after Azurite

$1,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

As the list of species suggests, this is one very busy specimen from Tsumeb with lots going on! It is unusual

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Calcite with Mottramite

$1,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

An elegant and aesthetic stacked group of three transparent rhombohedral Calcite crystals, intergrown and

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Cuprite

$950

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A terrific Cuprite from Tsumeb with many dozens of bright lustrous claret-red crystals scattered over and

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Calcite with Mottramite

$1,200

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Seldomly seen now, a tight cluster of gemmy nail head Calcite crystals shot through with dark olive-green

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Mottramite with Dolomite

$1,000

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A curious, little finger-sized (and shaped) stalactite of highly lustrous pale lilac Dolomite speckled with

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Adamite with Tsumcorite

$450

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

An interesting specimen of dark grey Quartz-rich matrix invested with various sulphides including Galena. On

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Malachite with Cuprite on Dolomite

$2,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Strings of bright maroon Cuprite crystals of 2 to 4 mm and rosettes of deep emerald-green Malachite to 8 mm

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Cuprite with Copper

$300

Manto Cuba Mine, Chile

Deep maroon-red crystals of Cuprite measuring to 5mm are scattered over a crystalline Native Copper matrix

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Hematite with Rutile

$2,250

Cavradi Gorge, Switzerland

A choice specimen of a lustrous black well-formed group of bladed Hematite crystals measuring to a good

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Hematite

$7,500

Fibbia Mountain, Switzerland

A spectacular and beautiful group of highly lustrous, metallic black Hematite crystals composed of blades in

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Cuprite

$1,200

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A fine intergrown crystal specimen of mostly octahedral Cuprite crystals measuring to 5mm. with crystalline

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Cuprite variety Chalcotrichite

$1,200

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A rich small cabinet specimen of plush red intergrown acicular Cuprite in the classic variety Chalcotrichite

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Cuprite

$850

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A neat thumbnail cluster display of cubo-octahedral Cuprite crystals, measuring to 1.2cm, with a deep

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Malachite

$150

A limonite-rich Quartz and Chalcopyrite veinstone has a central 3.0 x 1.5 cm vug richly lined with silky

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Creedite

$3,500

Navidad Mine, Mexico

This is an amazing example of Creedite, a calcium aluminium sulphate fluoro-hydroxide, occurring as a

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Hübnerite

$250

A rich 7 cm long seam of reddish-bronze to clove-brown Hübnerite crystals with a bright metallic lustre

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Corundum Var. “Ruby”

$950

Froland, Norway

An opaque, lustrous and intense cranberry-red hexagonal “Ruby” crystal partly embedded in a small block

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Quartz with Hematite

$750

A gorgeous small cabinet specimen of double terminated “Smoky” Quartz on Hematite, the latter in the habits of

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Goethite with Quartz

$300

A splendid small cabinet example of a Goethite-Quartz vein section from the Restormel Royal Iron Mine at

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Cuprite

$600

A magnificent cubic Cuprite crystal measuring 8 x 8 x 7 mm nestled with other well formed but smaller crystals

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Dolomite on Hematite

$250

Egremont, Cumbria

An excellent specimen of botryoidal Hematite, variety “kidney ore” coated with finely crystallised Hematite of

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Bismuthinite with Wood Tin, Chalcopyrite and Quartz

$7,500

A stunning museum quality specimen of long acicular needles of the bismuth sulphide Bismuthinite which spans

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Cuprite

$750

Intergrown crystalline Cuprite crystals form a sponge-like porous specimen from Marke Valley mine close to

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Cuprite Var. “Chalcotrichite”

$750

A charming “old time” specimen-rich in translucent, Burgundy-red Cuprite crystals and felt-like coatings of

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Baryte on Hematite

$200

Blades of pure snow-white Baryte to 4.0 x 2.0 x 0.3 cm form an intergrown bed which covers an underlying

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Cuprite Var. “Chalcotrichite”

$650

From a Victorian collection, this lovely example of the acicular habit of Cuprite, “Chalcotrichite”, is from

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Cuprite

$300

Two lustrous metallic Cuprite crystals sit in a matrix of granular Cuprite and micro-crystalline Chrysocolla

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Cassiterite

$1,600

Viloco Mine, Bolivia

A superb specimen of excellent Cassiterite crystals with great lustre and a rich dark brown colour with a hint

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Bixbyite

$900

Thomas Range, Utah

Two excellent mirror bright jet-black cubic crystals of Bixbyite measuring to 6mm with corner and edge

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Brookite with Quartz

$850

Kharan District, Balochistan

A miniature displaying two superb Brookite crystals developed on and amongst a group of gemmy, colourless

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Libethenite

$250

Two composite crystal groups of very dark, bottle-green Libethenite nestle in the centre of a shallow vug in a

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Anatase with Quartz

$900

Kharan District, Balochistan

A neat aesthetic specimen of a well-formed lustrous black Anatase crystal measuring to 1cm, pleasing position

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Hematite

$850

Ouro Preto, Brazil

A beautiful pair of hexagonal stacked crystals of Hematite form two rosettes slightly angled to one another,

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Cassiterite

$250

Wheal Kitty, England

Lustrous dark brown crystals of intergrown Cassiterite measuring to around 1cm with white Quartz crystals on a

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Hematite

$1,250

Rio Marina, Italy

A neat display of lustrous black and metallic grey intergrown crystals of Hematite from the classic iron

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Cuprite

$1,900

Wheal Druid, England

Well-developed very lustrous mostly octahedral crystals of Cuprite measuring to 4-5mm invest a white vein

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Hübnerite with Quartz

$750

Mundo Nuevo Mine, La Libertad Department

A very pleasing specimen of contrasting lustrous black prismatic crystals of Hübnerite measuring to

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Hübnerite with Quartz

$850

Pasto Bueno District, Peru

A neat aesthetic specimen of excellent broad-bladed metallic grey-black crystals of Hübnerite measuring

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Cassiterite

$250

Llallagua, Bolivia

A very rich specimen of Cassiterite from the sulphide and tin mining area of Llallagua, Bolivia. Fine

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Cuprite

$1,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Mirror-bright silvery Cuprite crystals to about 3-4mm completely coat an elongated, hillocky and vuggy plate