Oxides and Hydroxides

 

259 results

Hematite and Quartz
$550
 Florence Mine, England
A classic association of black lustrous bladed specular Hematite with slightly smoky Quartz crystals on
Cuprite
$800
 Wheal Gorland, England
This granular, vuggy and highly porous specimen is almost entirely composed of crystallised Cuprite forming a
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
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
Mereheadite
$150
 Torr Works Quarry, England
Mereheadite is a rare lead oxychloride incorporating barium and this specimen is from its type locality at
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
Cassiterite
$350
 St. Agnes, England
A beautiful and eye-catching group of brilliant-lustre Cassiterite crystals from the St. Agnes mining
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
Cassiterite with Quartz
$4,500
 Torrington, New South Wales
This specimen of beautifully crystallised Cassiterite intergrown with colourless Quartz crystals is amazing
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
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
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
Cuprite
$300
 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
$450
 Lavrion District Mines, Greece
Specimens from the Lavrion-Kamariza Mining District tend to be inherently aesthetic and this small miniature
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
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
Goethite with Calcite
$850
  Pribram, Czech Republic
Goethite can sometimes deliver a big punch and this specimen lives up to this reputation!  Almost the
Calcite on Chalcedony
$400
 Hüttenberger Erzberg, Carinthia
Pale milky-white double terminated scalenohedral Calcite crystals to about 5 mm are preferentially developed
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
Quartz var. Amethyst
$400
 Banska Stiavnica (Schemnitz), Slovakia
A gorgeous light purple sceptered double terminated Amethyst with some very clear fenster formations with a
Hematite on Albite
$1,500
 Goscheneralp, Switzerland
A true Alpine classic; A highly lustrous metallic Iron or Hematite Rose from Gösheneralp, Uri Switzerland.
Whewellite
$900
 Schacht 38 Mine, Germany
Whewellite is a relatively rare organic mineral, a hydrated calcium oxalate.  This is a near-perfect,
Pyrolusite
$500
 Luthersteufe Mine, Germany
Black, metallic, acicular needles of Pyrolusite to 8 mm densely cover a small matrix of massive mixed
Pyrolusite ps. after Calcite
$450
 Ilfeld, Germany
An excellent pseudomorph of coal-black metallic Pyrolusite replacing a stack of rhombohedral Calcite crystals
Cassiterite
$500
 Wheal Clarence, UK
A great example of well crystallised Cassiterite forming gemmy crystals along a cavity in a massive
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
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
Brookite
$400
 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
$400
 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)
$800
 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
$850
 Tsumeb Mine, Namibia
Otavite, a cadmium carbonate, was the first new mineral to be discovered at Tsumeb, being named in 1906. 
Goethite on Smithsonite
$500
A somewhat unusual specimen of a heavy, thick crust of chocolate brown Goethite overgrowing clear rhombohedral
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
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
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
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
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
Calcite and Hematite
$200
 Egremont, England
An aesthetic domed specimen of 3  to 5 mm nail-head Calcite crystals from the Egremont iron mining
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
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
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
Goethite
$850
 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
$500
 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
$750
 Agnes Mine, Cumbria
A beautiful showy specimen of golden-deep tan Dolomite coating two L-shaped faces of a creamy-white Dolomite
Tantalite-(Mn)
$750
 Nazareno, Brazil
A choice double terminated crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno
Tantalite-(Mn)
$850
 Nazareno, Brazil
An excellent orthorhombic crystal of Tantalite-(Mn) from the São João del Rei pegmatite province of Nazareno
Tellurite
$750
 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
$1,750
 Neudorf, Germany
A pleasing miniature of highly lustrous Galena with caramel brown rhombohedral Siderite crystals on a Quartz