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Oxides and Hydroxides

Oxides and Hydroxides

259 results

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Hematite and Quartz

$550

Florence Mine, England

A classic association of black lustrous bladed specular Hematite with slightly smoky Quartz crystals on

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Cuprite

$800

Wheal Gorland, England

This granular, vuggy and highly porous specimen is almost entirely composed of crystallised Cuprite forming a

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Hematite var. Pencil Ore

$550

West Cumberland Iron Ore Field, England

This specimen is an excellent example of what is termed ‘Pencil Ore’; a habit of Hematite that can be split

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Cassiterite (concentrate for smelting)

$100

Cornwall, England

An interesting artefact from the heyday of Cornish mining. A 6.5 x 1.3 cm diameter glass tube filled

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Mereheadite

$150

Torr Works Quarry, England

Mereheadite is a rare lead oxychloride incorporating barium and this specimen is from its type locality at

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Libethenite

$300

Wheal Phoenix, England

An excellent 2 x 1 cm patch of beautifully crystallised Libethenite crystals, each to about 0.8 mm and of a

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Cassiterite

$350

St. Agnes, England

A beautiful and eye-catching group of brilliant-lustre Cassiterite crystals from the St. Agnes mining

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Smithsonite on Coronadite

$950

Broken Hill Proprietary Mine, New South Wales

Translucent milky-white scalenohedral crystals of Smithsonite form a spiky dense triangular cluster on a sooty

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Cassiterite with Quartz

$4,500

Torrington, New South Wales

This specimen of beautifully crystallised Cassiterite intergrown with colourless Quartz crystals is amazing

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Bromian Chlorargyrite with Pyrolusite and Psilomelane

$800

Broken Hill Proprietary Mine, New South Wales

A porous and vuggy granular matrix of mid-grey mixed Pyrolusite and Psilomelane richly invested with many very

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Goethite coating Cerussite after Anglesite

$3,500

Kintore Opencut, Australia

A beautiful, perfectly formed specimen of coal-black Goethite coating razor-sharp crystals of Cerussite

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Cuprite

$400

Wheal Gorland, England

Cuprite crystals of up to 7 mm with a silvery-grey patina coat much of a re-cemented milky Quartz breccia vein

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Cuprite

$300

Redruth, England

An excellent Cuprite from the mines around Redruth in south-west Cornwall. It is likely that the

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Azurite with Calcite and Malachite ps. after Cuprite

$450

Lavrion District Mines, Greece

Specimens from the Lavrion-Kamariza Mining District tend to be inherently aesthetic and this small miniature

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Titanite

$150

Thörlbirg, Salzburg

A translucent limey-apple-green blade of Titanite, perfectly terminated and attached to a 1.2 x 1.2 x 0.7

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Bindheimite ps. after Bournonite with Malachite

$1,200

Felixbau Mine, Carinthia

This specimen might be described as an ugly brute (!), but a rather beautiful ugly brute!!! Mottled lime

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Goethite with Calcite

$850

Pribram, Czech Republic

Goethite can sometimes deliver a big punch and this specimen lives up to this reputation! Almost the

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Calcite on Chalcedony

$400

Hüttenberger Erzberg, Carinthia

Pale milky-white double terminated scalenohedral Calcite crystals to about 5 mm are preferentially developed

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Chalcedony epimorph after Baryte

$500

Hüttenberger Erzberg, Carinthia

An interesting light pale blue mass of Chalcedony riddled with epimorph cavities of sharp bladed Baryte from

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Quartz var. Amethyst

$400

Banska Stiavnica (Schemnitz), Slovakia

A gorgeous light purple sceptered double terminated Amethyst with some very clear fenster formations with a

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Hematite on Albite

$1,500

Goscheneralp, Switzerland

A true Alpine classic; A highly lustrous metallic Iron or Hematite Rose from Gösheneralp, Uri Switzerland.

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Whewellite

$900

Schacht 38 Mine, Germany

Whewellite is a relatively rare organic mineral, a hydrated calcium oxalate. This is a near-perfect,

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Pyrolusite

$500

Luthersteufe Mine, Germany

Black, metallic, acicular needles of Pyrolusite to 8 mm densely cover a small matrix of massive mixed

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Pyrolusite ps. after Calcite

$450

Ilfeld, Germany

An excellent pseudomorph of coal-black metallic Pyrolusite replacing a stack of rhombohedral Calcite crystals

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Cassiterite

$500

Wheal Clarence, UK

A great example of well crystallised Cassiterite forming gemmy crystals along a cavity in a massive

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Connellite with Malachite and Chalcophyllite

$2,500

Wheal Unity, Cornwall

An absolutely superb specimen of the hydrous copper chloro-sulphate Connellite from the enigmatic Wheal Unity

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Nasonite in Datolite and Goethite

$300

Torr Works Quarry, England

Nasonite is one of the Holy Grails from the rare oxychloride suite occasionally found in Torr Works quarry at

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Brookite

$400

Twll Maen Grisial, UK

Prenteg, close to Porthmadog in north-west Wales, is famed for its magnificent Brookite crystals. In

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Crednerite with Malachite on Calcite

$400

Torr Works Quarry, England

Platy black crystals of the Cu-Mn oxide Crednerite line vugs in crystalline snow-white Calcite within by a

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Cassiterite variety Wood Tin (2 pieces)

$800

Goss Moor, England

The fibrous variety of Cassiterite called ‘Wood Tin’ is one of those great classics of Cornish mineralogy and

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Otavite with Rosasite and Cerussite

$850

Tsumeb Mine, Namibia

Otavite, a cadmium carbonate, was the first new mineral to be discovered at Tsumeb, being named in 1906.

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Goethite on Smithsonite

$500

A somewhat unusual specimen of a heavy, thick crust of chocolate brown Goethite overgrowing clear rhombohedral

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Quartz with Hematite

$1,500

Changjiang Uranium ore field, China

A gorgeous and arresting group of “Rock Crystal” Quartz crystals to 5 cm on an aesthetically contrasting

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Indite with Dzhalindite (Specimen & Polished Mount)

$500

Dzhalinda Sn Deposit, Far-Eastern Region

Minerals incorporating the element Indium (In) are far from common and these two specimens, a small sawn slice

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Corundum var. Sapphire

$6,000

Ratnapura, Sri Lanka

A stunning double terminated crystal of Sapphire, a variety of Corundum, from the rich gem-bearing district of

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Diaspore (twin)

$600

Muğla Province, Turkey

A V-twin of gemmy greenish-lemon Diaspore from the famous occurrence in Muğla Province in the Aegean Region of

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Brookite with Quartz

$400

Kharan District, Balochistan

A stunning, perfectly terminated blade of chocolate-brown Brookite measuring 2.8 x 1.2 x 0.1 cm developed

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Calcite and Hematite

$200

Egremont, England

An aesthetic domed specimen of 3 to 5 mm nail-head Calcite crystals from the Egremont iron mining

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Hematite on Quartz

$900

Cumbria, England

An attractive dome of slightly smoky Quartz crystals cover a solid Hematite core and with one side coated in

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Crednerite with Malachite and Hydrocerussite

$5,000

Torr Works Quarry, England

The famous Torr Works quarry (usually referred to as Merehead quarry) produced a suite of wonderful minerals

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Quartz on Hematite

$900

Cleator Moor Iron Mine, Cumbria

Double terminated, slightly smoky Quartz crystals to 2.5 cm richly cap a dome of black metallic Hematite

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Goethite

$850

Restormel Royal Iron Mines, England

The iron oxyhydroxide mineral Goethite was once abundant at the Restormel Royal Iron Mine close to Lostwithiel

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Hematite with Quartz

$500

Florence Mine, England

A lozenge-shaped cavity measuring 6 x 10 cm (maximum dimensions) in a matrix of massive Hematite, is lined

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Dolomite on Quartz with Hematite

$750

Agnes Mine, Cumbria

A beautiful showy specimen of golden-deep tan Dolomite coating two L-shaped faces of a creamy-white Dolomite

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Tantalite-(Mn)

$750

Nazareno, Brazil

A choice double terminated crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno

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Tantalite-(Mn)

$850

Nazareno, Brazil

An excellent orthorhombic crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno

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Tellurite

$750

Moctezuma Mine (Bambolla Mine), Sonora

An neat specimen of straw yellow bladed crystals of Tellurite on a metallic silvery Tellurium-rich matrix.

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Galena with Siderite on Quartz

$1,750

Neudorf, Germany

A pleasing miniature of highly lustrous Galena with caramel brown rhombohedral Siderite crystals on a Quartz