Oxides and Hydroxides


370 results

Cuprite on Dolomite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A lustrous maroon red crystal of Cuprite measuring to 9 mm sits on a matrix of creamy Dolomite crystals from
 Tsumeb Mine, Namibia
A super-rich miniature of crystallised Cuprite covering the top surface of a Goethite-Limonite gossan from
Limonite pseudomorph after Pyrite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A matrix-free pseudomorph of Limonite after cubic Pyrite crystals.  The larger crystal measures 3.2 x 2.7
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A choice, large thumbnail specimen of the zinc arsenate hydroxide Paradamite, a very rare species from the
Cuprite coated with Malachite
 Andrássy II. Mine, Borsod-Abaúj-Zemplén Co.
A well-formed cuboctahedral crystal of Cuprite measuring to 3.2 cm dominates this small cabinet specimen, all
Andrewsite (Hentschelite-Rockbridgeite-Chalcosiderite) with Goethite
 Wheal Phoenix, England
Although we still refer to this mineral as Andrewsite, it was discredited in 1990, being a mixture of
Quartz with Hematite and Calcite
 Haile Moor Mine, England
A classic west Cumbrian specimen of well-developed Quartz crystals to 2 cm, substantially included by
 Wheal Gorland, England
A granular, large thumbnail matrix of iron-stained milky Quartz is richly coated with intergrown blades of
Brookite with Albite
 Twll Maen Grisial, UK
The area around Prenteg in North Wales is famous for its titanium dioxide polymorphs, Anatase, Brookite and
 South Crofty Mine, England
A rich Cassiterite from South Crofty mine at Pool, about mid-way on the A30 between Camborne and
Rutile (twin)
 Graves Mountain, USA
Mention Graves Mountain and just one mineral comes to mind, Rutile.  Situated in Lincoln County, Georgia,
Zincite with Franklinite and Calcite
 Franklin, USA
Rounded crystals of dark cherry red-brown Zincite protrude from a creamy Calcite matrix pervaded with metallic
 Bisbee, Arizona
A rich miniature of sub-mm, burgundy-red Cuprite forms a mixed crystalline and granular deep crust over a
Cuprite with Native Copper
 Bisbee, Arizona
An attractive 4 x 3 cm group of metallic burgundy-red Cuprite crystals to about 6 mm in a matrix of earthy
 Thomas Range, Utah
Two excellent mirror bright jet-black cubic crystals of Bixbyite measuring to 6 mm with sawtooth corner and
Cuprite variety Chalcotrichite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A rich miniature red intergrown acicular Chalcotrichite, the acicular variety of Cuprite.  Micro-felty
 Ambatondrazaka District, Toamasina Province (Tamatave)
A beautiful acidic apple-green, chevroned-array of Chrysoberyl crystals forming a flat platy specimen from the
Opal var. Boulder Opal
 Queensland, Australia
There is no denying when Boulder Opal is good, it is magnificent! Boulder Opal is a variety of Precious Opal
 Ilfeld, Germany
Manganite from the deposit at Ilfeld in the south-eastern Harz mountains of Germany is one of Western Europe’s
Cassiterite (vein section)
 Illogan, England
This small cabinet specimen of Cassiterite, crystallised within a section of vein material, is labelled as
Quartz variety Eisenkiesel on Hematite
 Florence Mine, England
An 8.8 x 5.0 cm plate of sooty coloured Hematite richly covered with equant bipyramidal Quartz crystals makes
Anatase with Quartz, Albite and Calcite
 Prenteg, Wales
Prenteg is famous for the occurrence of the trimorphous minerals Anatase, Brookite and Rutile, each a
 Prenteg, Gwynedd
Prenteg is famous for the occurrence of the trimorphous minerals Anatase, Brookite and Rutile, each a
 Botallack Mine, England
A striking display of black, botryoidal Goethite with a sparkling drusy surface with a well-defined internal
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A well-formed tightly clustered group Schneiderhöhnite crystals with excellent terminations of a lustrous
Goethite on Smithsonite
 Tsumeb Mine, Namibia
Bright black botryoidal druses of lustrous Goethite coat hidden Smithsonite crystals to 1.4 cm sitting on a
 Rauris Valley, Austria
A fine cabinet specimen of red to dark maroon Rutile crystals which range from micro to 6 mm, with many
Liroconite with Clinoclase
 Wheal Gorland, England
Liroconite, a hydrated copper aluminium arsenate hydroxide, carries a kudos within Cornish collections that no
 Wheal Phoenix, England
The copper phosphate Libethenite is a well known species from the mining complex at Wheal Phoenix close to the
Hematite var. Kidney Ore
 Goose Green Mine, Cumbria
A delightful mamillary mound of Kidney Ore, the botryoidal variety of Hematite.  The Hematite forms an
Chalcoalumite, Ajoite and Brochantite on Native Copper and Cuprite
 New East Wheal Russell, England
A complexly mineralised miniature displaying Chalcoalumite (hydrous Al-Cu sulphate), Ajoite (hydrated
Calcite and Hematite
 Egremont, England
An aesthetic domed specimen of 3 to 5 mm nail-head Calcite crystals from the Egremont iron mining district in
 N'Chwaning Mines, South Africa
Wow!  This is one beast of a Hausmannite, a beautiful beast I hasten to add!  From the famous
Schneiderhöhnite with Quartz and Tennantite
 Tsumeb Mine, Namibia
This small miniature of the very rare iron arsenate Schneiderhöhnite in a matrix of mixed Tennantite and
 Wessels Mine, South Africa
A bright metallic steely blue grey crystal of Hematite measuring to 3.7 cm, displaying a pyramidal form
Native Copper with Cuprite
 Wheal Unity, England
A rich, crudely crystallised vuggy and porous mass of Native Copper is richly pervaded with octahedral Cuprite
Cuprite with Native Copper
 Nizhnetagilskii Massif, Russia
This compact and chunky miniature of a vuggy yet solid mass of Native Copper is pervaded with splendid
Fluorite with Hematite, Siderite and Chalcopyrite
 Carn Brea Mine, England
Carn Brea is a prominent elongated ridge of granite adjacent to the A30 road and railway line between Camborne
Quartz with Hematite var. Eisenkiesel
 Frizington, Cumbria
The mineralogy of the west Cumbrian iron mines tends to be simple, yet the specimens produced represent some
Cerussite ps. after Anglesite with Coronadite
 Broken Hill, Australia
This large cabinet size Cerussite pseudomorphing after Anglesite and coated with Coronadite is a Broken Hill
Pyromorphite on Coronadite
 MMM Mine, Australia
The famous MMM mine at Broken Hill in Australia worked the line of lode orebody and is situated within the
 Franklin Mine, USA
The Franklin mines in Sussex County, New Jersey, exploited one of the most complex orebodies on Earth, famed
Hematite ps. after Magnetite var. Martite
 Payún Matrú volcano, Argentina
This is quite an amazing miniature specimen composed of aligned rows and columns of superbly crystallised
 Bejewans, England
Although I dearly love these specimens of Cassiterite from the famous deposit of the Bejewans Tin Stream Works
Scheelite on Zinnwaldite
 Cínovec / Zinnwald, Saxony & Ústí Region
An excellent miniature displaying a dense cluster of sharply formed Scheelite crystals set in a matrix of
Adamite on Calcite
 Lavrion, Attikí Prefecture
The zinc arsenate Adamite forms superb specimens in the Lavrion mining district of the Attica Peninsula in
 M'sesa Mine, DR Congo
A rich and stunning group of dark leaf green Libethenite crystals line a shallow, open vug in a matrix of
 Hematite occurrence, Morocco
Many present-day collectors are familiar with the blue Baryte specimens being produced form this locality,