Oxides and Hydroxides

 

195 results

Manganite
$7,500
 Ilfeld, Germany
A superb classic crystal specimen of Ilfeld Manganite. Excellent metallic black prismatic crystals of
Cuprite coated by Malachite
$700
 Andrássy II. Mine, Borsod-Abaúj-Zemplén Co.
A well-formed cubo-octahedral  crystal of Cuprite measuring to 3 cm dominates the specimen coated by a
Asisite, Britvinite and Hematophanite
$2,000
 Kombat Mine, Namibia
A mixed ore specimen composed of granular Asisite, Britvinite, Hematophanite and Quartz from Kombat mine,
Bixbyite with Topaz
$200
 Thomas Range, Utah
A highly lustrous metallic black Bixbyite crystal measuring 12 x 8 x 7 mm perched on a terminated
Cuprite
$650
 Fowey Consols, Cornwall
Bright red capillary crystals of Cuprite variety Chalcotrichite invest areas to 1 cm on a white Quartz gossan
Hematite with Quartz
$450
 Florence Mine, England
A pleasing west Cumbria specimen of platy crystals of black Specularite Hematite with intergrown
Cuprite with Native Copper
$300
 Wheal Gorland, England
Intergrown deep maroon lustrous octahedral crystals of Cuprite measuring to around 4 mm on areas of Native
Cuprite
$1,300
 Wheal Gorland, England
A very rich crystal specimen of intergrown lustrous octahedral deep maroon coloured Cuprite crystals
Goethite
$340
 Botallack Mine, England
A pleasing display of botryoidal Goethite with a sparkling druse surface, and well-defined internal
Cassiterite
$250
 Wheal Pendarves, England
A central cavity veinstone is lined with a druse of dark lustrous brown Cassiterite to around 4 mm with
Hematite
$200
 N'Chwaning II Mine, South Africa
A very fine, steely-silver Hematite crystal measuring 1.9 x 1.8 x 1.4 cm perched on a small sliver of matrix
Cassiterite
$400
 Mt Xuebaoding, China
An excellent lustrous twinned crystal of Cassiterite measuring to 2.2 cm sits at the apex of the Muscovite
Anatase
$350
 Zard Mtn, Balochistan
Five lustrous classic crystal habit Anatase measuring from 3 mm to 10 mm are pleasingly arranged on the
Quartz Var. Eisenkiesel on Hematite
$300
 Florence Mine, England
A delicate 1 to 2 mm thick plate of Hematite coated with micro-crystals of sparkling jet-black Specularite
Cuprite
$350
 Cornwall, England
An off-matrix, porous granular mass of lustrous Cuprite micro-crystals from Cornwall, England.  Although
Cassiterite
$400
 Cornwall, England
A bed of reasonably well-developed black to clove-brown Cassiterite crystals richly coating the upper surface
Rutile
$4,500
 Brumado, Brazil
A now hard to find Rutile forming a long deep dark red metallic lustrous prismatic crystal measuring to 7 cm
Bixbyite
$250
 Thomas Range, Utah
Three lustrous black crystals of Bixbyite measuring to 5 mm associated with crystals of Topaz and Fluorite
Hematite
$5,000
 Wessels Mine, South Africa
A stunning group of mirror-bright, beautiful Hematite crystals from the Wessels manganese mine at Hotazel
Hausmannite
$1,750
 Gottlob Hill, Thuringia
Abundant intergrown black octahedral crystals of Hausmannite measuring to 5 mm covers the display face of the
Valentinite with Kermesite
$950
 Neue Hoffnung Gottes Mine, Germany
Broad bladed striated crystals of colourless-white Valentinite measuring in the 1 mm range are
Whewellite
$400
 Oberschlema, Saxony
White and pale grey crystals of the oxalate Whewellite form a curving parallel development with slopping
Goethite
$450
 Schönbrunn, Saxony
An intriguing specimen of Goethite from Saxony, Germany, having a compact columnar form with
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
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
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
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
Crednerite
$3,000
 Torr Works Quarry, England
This specimen of Crednerite, a rare copper-manganese oxide, was found in the manganese pods within the
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
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
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
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
Goethite after Cerussite Pseudomorph Anglesite
$600
 Broken Hill, Australia
 A well-defined replacement of black-dark grey and red-brown  Goethite after Cerussite white
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
Sturmanite with Hausmannite
$1,600
 N'Chwaning Mines, South Africa
A flat plate of cryptocrystalline Sturmanite is completely coated with flattened hexagonal pagoda-like
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,
Brunogeierite
$150
 Carboire, Occitanie
Brunogeierite a rare Germanium-Iron Oxide as metallic grey areas intergrown with Sphalerite in a polished
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
Montgomeryite
$1,500
 Tip Top Mine, USA
An excellent specimen of the very seldom encountered species Montgomeryite, a calcium-magnesium-aluminium
Liroconite
$800
 Wheal Gorland, England
A granular, large thumbnail matrix of iron-stained milky Quartz, is richly coated with intergrown blades of
Cuprite with Cuprite var. Chalcotrichite
$500
 Wheal Unity, Cornwall
Hackly intergrown granules of silvery deep-red Cuprite cover a porous brecciated Quartz veinstone. Richly
Goethite with Quartz
$450
 Restormel Royal Iron Mines, England
A beautifully aesthetic specimen of botryoidal Goethite forming undulating mid to dark chocolate-brown mounds
Cassiterite
$1,500
 Trevaunance Mine, Cornwall
A splendid bed of lustrous brownish-black Cassiterite crystals to 1.7 cm, covering a milky-Quartz fracture
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
Cassiterite
$600
 Horní Slavkov, Karlovy Vary Region
A classic twinned crystal of lustrous black Cassiterite  measuring to 2.4 cm from Horni Slavkov,
Cassiterite
$350
 Erzgebirge, Saxony
A classic thumbnail specimen of lustrous black twinned Cassiterite from Erzgebirge, Germany, measuring overall
Romanèchite
$350
 Adam Heber Mine, Saxony
Specimens of Manganese oxides are seldom represented in collections. The specimen of Romanèchite we have
Cassiterite
$500
 Horní Slavkov, Karlovy Vary Region
Classic lustrous black twinned crystal of Cassiterite measuring to 3.4 cm from Horní Slavkov, Czech