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Oxides and Hydroxides

Oxides and Hydroxides

179 results

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Hausmannite

$1,750

Gottlob Hill, Thuringia

Abundant intergrown black octahedral crystals of Hausmannite measuring to 5 mm covers the display face of the

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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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Hematite Var. Specularite with Quartz

$1,200

Florence Mine, England

Stubby, colourless to slightly smoky-grey Quartz crystals densely coat a 2 cm thick matrix of granular

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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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Aragonite with Quartz and Hematite Var. Specularite

$600

Florence Mine, England

An aesthetic and first-rate example of delicately-crystallised Aragonite spheres scattered over a layer of

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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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Hübnerite with Quartz

$4,500

Mundo Nuevo Mine, La Libertad Department

A superb specimen of lustrous black bladed striated crystals of Hübnerite measuring to 2.5 cm,

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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

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Cuprite with Malachite

$500

Rudabánya, Borsod-Abaúj-Zemplén Co.

Two specimens of intergrown octahedral and dodecahedral Cuprite crystals measuring to 1.1 cm coated in

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Cassiterite

$600

Horní Slavkov, Karlovy Vary Region

A classic twinned crystal of lustrous black Cassiterite measuring to 2.4 cm from Horni Slavkov,

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Cassiterite

$350

Erzgebirge, Saxony

A classic thumbnail specimen of lustrous black twinned Cassiterite from Erzgebirge, Germany, measuring overall

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Romanèchite

$350

Adam Heber Mine, Saxony

Specimens of Manganese oxides are seldom represented in collections. The specimen of Romanèchite we have

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Cassiterite

$500

Horní Slavkov, Karlovy Vary Region

Classic lustrous black twinned crystal of Cassiterite measuring to 3.4 cm from Horní Slavkov, Czech

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Valentinite

$300

Porvenir mine, Oruro Department

Five specimens of well-formed crystals of Valentinite from the Porvenir MIne. Bolivia. Measurements are

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Columbite-(Fe) with Microlite

$7,500

Mawi pegmatite, Nuristan Province

A fine pegmatite specimen displaying a central area rich in bladed lustrous black Columbite-(Fe) intergrown

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Azurite with Malachite pseudomorph after Azurite

$8,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A spectacular and beautiful small cabinet specimen of glassy and gemmy deep blue Azurite crystals, silky

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Cuprite

$750

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A very rich crystal specimen of Cuprite displaying intergrown crystals measuring to 1cm on a

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Szenicsite with Powellite and Molybdenite

$7,500

Jardinera No 1 Mine, Chile

A rare and spectacular specimen of the extremely rare mineral Szenicsite with Molybdenite and copper-bearing

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Hematite with Rutile and Quartz

$850

Cavradi Gorge, Switzerland

A classic Alpine Cleft specimen from the Cavradi Gorge, Switzerland. Characteristic mirror bright

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Cuprite

$300

Phoenix United Mine, England

Abundant intergrown crystals of maroon coloured Cuprite measuring in the 1mm area on a typical

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Cuprite with Native Copper

$500

Camborne-Redruth, England

A rich crystal specimen of sparkling intergrown octahedra of Cuprite measuring around 4-5mm with areas of

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Cuprite with Dolomite

$6,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Well-formed clusters and single crystals of deep maroon red Cuprite are finely contrasted on the

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Cuprite

$3,200

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Well-developed lustrous complex crystals of Cuprite measuring to 1cm have formed in cavities on a

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Cuprite with Chrysocolla

$3,500

Mashamba West Mine, Katanga Copper Crescent

A classic specimen of Cuprite crystals from the Mashamba West Mine, Dem Rep of Congo. Crystals of

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Corundum Var. Ruby with Dravite in Marble

$2,000

Jegdalek Ruby Deposit, Afghanistan

A charming miniature composed of an aesthetic fuschia-pink Corundum crystal, variety Ruby, perched on a small

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Quartz with Hematite

$450

Cavradi Gorge, Grischun

A clear and almost colourless terminated Quartz crystal which at one side is embedded with a platy

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Rutile

$250

A well terminated metallic dark chocolate-brown crystal of Rutile measuring 2.0 x 1.7 x 1.2 cm which protrudes

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Quartz with Dolomite on Hematite

$1,250

Florence Mine, England

Although the famous Florence mine close to Egremont in west Cumbria produced less than ten different mineral

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Cuprite

$200

Wheal Gorland, England

A limonite stained Quartz veinstone is shot-through and very richly covered with lustrous octahedral crystals

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Cassiterite after Orthoclase

$600

Wheal Coates, England

A Cornish classic of dark brown granular Cassiterite completely replacing a Carlsbad twinned

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Cassiterite with Pyrite

$750

Levant Mine, England

A very rich specimen of densely intergrown crystals of brown Cassiterite crystals with Quartz overgrown by a

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Hematite with Quartz

$3,500

Beckermet Mine, England

A very fine specimen of classic Specular Hematite with gemmy well-developed Quartz crystals. Crystals of