Oxides and Hydroxides


297 results

 Wheal Phoenix, England
An excellent 2 x 1 cm patch of beautifully crystallised Libethenite crystals, each to about 0.8 mm and of a
 St. Agnes, England
A beautiful and eye-catching group of brilliant-lustre Cassiterite crystals from the St. Agnes mining
Smithsonite on Coronadite
 Broken Hill Proprietary Mine, New South Wales
Translucent milky-white scalenohedral crystals of Smithsonite form a spiky dense triangular cluster on a sooty
Cassiterite with Quartz
 Torrington, New South Wales
This specimen of beautifully crystallised Cassiterite intergrown with colourless Quartz crystals is amazing
Bromian Chlorargyrite with Pyrolusite and Psilomelane
 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
Goethite coating Cerussite after Anglesite
 Kintore Opencut, Australia
A beautiful, perfectly formed specimen of coal-black Goethite coating razor-sharp crystals of Cerussite
 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
 Redruth, England
An excellent Cuprite from the mines around Redruth in south-west Cornwall.  It is likely that the
Azurite with Calcite and Malachite ps. after Cuprite
 Lavrion District Mines, Greece
Specimens from the Lavrion-Kamariza Mining District tend to be inherently aesthetic and this small miniature
 Thörlbirg, Salzburg
A translucent limey-apple-green blade of Titanite, perfectly terminated and attached to a 1.2 x 1.2 x 0.7
Bindheimite ps. after Bournonite with Malachite
 Felixbau Mine, Carinthia
This specimen might be described as an ugly brute (!), but a rather beautiful ugly brute!!!  Mottled lime
Goethite with Calcite
  Pribram, Czech Republic
Goethite can sometimes deliver a big punch and this specimen lives up to this reputation!  Almost the
Calcite on Chalcedony
 Hüttenberger Erzberg, Carinthia
Pale milky-white double terminated scalenohedral Calcite crystals to about 5 mm are preferentially developed
Chalcedony epimorph after Baryte
 Hüttenberger Erzberg, Carinthia
An interesting light pale blue mass of Chalcedony riddled with epimorph cavities of sharp bladed Baryte from
Quartz var. Amethyst
 Banska Stiavnica (Schemnitz), Slovakia
A gorgeous light purple sceptered double terminated Amethyst with some very clear fenster formations with a
Hematite on Albite
 Goscheneralp, Switzerland
A true Alpine classic; A highly lustrous metallic Iron or Hematite Rose from Gösheneralp, Uri Switzerland.
 Schacht 38 Mine, Germany
Whewellite is a relatively rare organic mineral, a hydrated calcium oxalate.  This is a near-perfect,
 Luthersteufe Mine, Germany
Black, metallic, acicular needles of Pyrolusite to 8 mm densely cover a small matrix of massive mixed
Pyrolusite ps. after Calcite
 Ilfeld, Germany
An excellent pseudomorph of coal-black metallic Pyrolusite replacing a stack of rhombohedral Calcite crystals
 Wheal Clarence, UK
A great example of well crystallised Cassiterite forming gemmy crystals along a cavity in a massive
Connellite with Malachite and Chalcophyllite
 Wheal Unity, Cornwall
An absolutely superb specimen of the hydrous copper chloro-sulphate Connellite from the enigmatic Wheal Unity
Nasonite in Datolite and Goethite
 Torr Works Quarry, England
Nasonite is one of the Holy Grails from the rare oxychloride suite occasionally found in Torr Works quarry at
 Twll Maen Grisial, UK
Prenteg, close to Porthmadog in north-west Wales, is famed for its magnificent Brookite crystals.  In
Crednerite with Malachite on Calcite
 Torr Works Quarry, England
Platy black crystals of the Cu-Mn oxide Crednerite line vugs in crystalline snow-white Calcite within by a
Cassiterite variety Wood Tin (2 pieces)
 Goss Moor, England
The fibrous variety of Cassiterite called ‘Wood Tin’ is one of those great classics of Cornish mineralogy and
Otavite with Rosasite and Cerussite
 Tsumeb Mine, Namibia
Otavite, a cadmium carbonate, was the first new mineral to be discovered at Tsumeb, being named in 1906. 
Goethite on Smithsonite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A somewhat unusual specimen of a heavy, thick crust of chocolate brown Goethite overgrowing clear rhombohedral
Quartz with Hematite
 Changjiang Uranium ore field, China
A gorgeous and arresting group of “Rock Crystal” Quartz crystals to 5 cm on an aesthetically contrasting
Indite with Dzhalindite (Specimen & Polished Mount)
 Dzhalinda Sn Deposit, Far-Eastern Region
Minerals incorporating the element Indium (In) are far from common and these two specimens, a small sawn slice
Corundum var. Sapphire
 Ratnapura, Sri Lanka
A stunning double terminated crystal of Sapphire, a variety of Corundum, from the rich gem-bearing district of
Diaspore (twin)
 Muğla Province, Turkey
A V-twin of gemmy greenish-lemon Diaspore from the famous occurrence in Muğla Province in the Aegean Region of
Brookite with Quartz
 Kharan District, Balochistan
A stunning, perfectly terminated blade of chocolate-brown Brookite measuring 2.8 x 1.2 x 0.1 cm developed
Calcite and Hematite
 Egremont, England
An aesthetic domed specimen of 3  to 5 mm nail-head Calcite crystals from the Egremont iron mining
Hematite on Quartz
 Cumbria, England
An attractive dome of slightly smoky Quartz crystals cover a solid Hematite core and with one side coated in
Crednerite with Malachite and Hydrocerussite
 Torr Works Quarry, England
The famous Torr Works quarry (usually referred to as Merehead quarry) produced a suite of wonderful minerals
Quartz on Hematite
 Cleator Moor Iron Mine, Cumbria
Double terminated, slightly smoky Quartz crystals to 2.5 cm richly cap a dome of black metallic Hematite
 Restormel Royal Iron Mines, England
The iron oxyhydroxide mineral Goethite was once abundant at the Restormel Royal Iron Mine close to Lostwithiel
Hematite with Quartz
 Florence Mine, England
A lozenge-shaped cavity measuring 6 x 10 cm (maximum dimensions) in a matrix of massive Hematite, is lined
Dolomite on Quartz with Hematite
 Agnes Mine, Cumbria
A beautiful showy specimen of golden-deep tan Dolomite coating two L-shaped faces of a creamy-white Dolomite
 Nazareno, Brazil
A choice double terminated crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno
 Nazareno, Brazil
An excellent orthorhombic crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno
 Moctezuma Mine (Bambolla Mine), Sonora
An neat specimen of straw yellow bladed crystals of Tellurite on a metallic silvery Tellurium-rich matrix.
Galena with Siderite on Quartz
 Neudorf, Germany
A pleasing miniature of highly lustrous Galena with caramel brown rhombohedral Siderite crystals on a Quartz
 Ilfeld, Germany
A true German classic. Well-formed jet black crystals of Manganite with a near-mirror like lustre from Ilfeld,
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A choice thumbnail of highly lustrous yellow-green Mimetite crystals from the Tsumeb Mine in Namibia with
Quartz var. Amethyst
 Banska Stiavnica (Schemnitz), Slovakia
A neat aesthetic Amethyst from the classic European locality Banská Stiavnica (Schemnitz), Slovakia. The
Quartz (Japan-Law Twin)
 Brandberg, Namibia
A beautiful double-terminated heart-shaped Japan-Law twin of Quartz from the Brandberg Area of Namibia. A
 Djebel Haminate Mine, Algeria
A single grey octahedral crystal with several intergrown smaller crystals of Senarmontite from Djebel Hammimat