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Oxides and Hydroxides

Oxides and Hydroxides

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Brookite with Anatase

$750

Prenteg, Gwynedd

The mention of Prenteg conjures thoughts of the titanium dioxide polymorphs and this terrific miniature is a

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Anatase with Albite and Quartz

$1,000

Twll Maen Grisial, UK

A 3 mm clove brown Anatase crystal nestles in a small cleft next to colourless Quartz crystals and several

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Brookite

$300

Tremadoc, Gwynedd

Two intergrown, lightly striated Brookite crystals sit flat against a greenish-grey igneous-type matrix and

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Hematite

$850

Cavradi Gorge, Grischun

A magnificent small miniature of classic Iron Rose Hematite with multiple-stacked hexagonal plates forming a

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Cuprite

$350

Wheal Gorland, England

Intensely deep maroon to mahogany red octahedral Cuprite crystals richly cover the top surface of a highly

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Calcite on Goethite included Quartz (2 pieces)

$200

19 Level Load Drive, Cornwall

Collectors of Cornish minerals will be familiar with many forms of Calcite from the legendary Geevor and

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Pyrolusite

$700

Gremmelsbach, Germany

Pyrolusite, a manganese dioxide, is one of those minerals which commonly occurs as a minor coating or

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Bindheimite and Malachite ps. after Bournonite

$2,500

Hüttenberg, Carinthia

Bindheimite is a hydrous lead antimony oxide produced from the alteration of other ores and is a species still

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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. The exact

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Valentinite

$850

Lill Mine, Bohemia

The antimony oxide Valentinite forms an inverted spray of translucent, cream acicular crystals in a tight,

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Psilomelane

$1,250

Vrančice, Central Bohemian Region

The Příbram Mining District covers a wide area and Vrančice is a village within it, around which several mines

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Cassiterite

$500

Horní Slavkov (Schlaggenwald), Bohemia

This Cassiterite from Horní Slavkov in the Karlovy Vary Region of Bohemia, Czech Republic, is one of those

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Goethite

$900

Trebsko, Czech Republic

The area surrounding Třebsko, a village 10 km southwest of Příbram, was a silver-uranium mining district and

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Stibiconite on Stibnite

$250

Baia Sprie, Romania

Masses of intergrown, long acicular, silver-black Stibnite crystals to over 1.5 cm long are coated in a

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Magnetite

$600

Banat Mountains, Romania

A lovely miniature of lustrous octahedral Magnetite crystals from the Banat Mountains in Caraş-Severin County,

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Hübnerite with Quartz and Pyrite

$1,500

Baia Sprie, Romania

A lovely miniature of intergrown, lustrous, black bladed Hübnerite crystals measuring to 2.6 cm, nicely

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Cassiterite

$1,500

Horni Slavkov (Schlaggenwald), Czech Republic

A number of mines surround the historic mining town of Horní Slavkov in the Karlovy Vary Region of Bohemia in

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Corundum var. Ruby

$2,500

Froland, Norway

A splendid example of Ruby Corundum on matrix from the Froland region in the county of Agder in southern

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Hematite var. Iron Rose

$600

St. Gotthard, Switzerland

A chunky and robust Hematite Iron Rose, attached to a smear of granular milky-Quartz matrix, from the St.

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Diopside and Magnetite and Clinochlore

$300

Nordmark Odal Field (Nordmarksberg), Sweden

A saddle-shaped, V-section, greenish metamorphic matrix, similar to a tight recumbent fold, is encrusted on

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Rutile

$450

Pfitsch Pass, Austria

This incredibly rich Rutile is from the famed Pfitsch Pass in Zillertal, North Tyrol, Austria. It displays

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Cassiterite

$1,750

Horni Slavkov (Schlaggenwald), Czech Republic

Cassiterite is one of those species which holds great appeal to so many mineral collectors, me included. This

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Brookite on Quartz

$700

Switzerland, Europe

A delightful single terminated Brookite crystal emerges from one prism face of a glassy, part Quartz crystal

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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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Goethite

$150

Porthgwarra, Cornwall

This lustrous Goethite miniature is from a locality in Cornwall which I have never before encountered.

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Cassiterite var. Stream Tin (in glass phial)

$600

Tregoss Moor, Cornwall

Judging by the neatly written label attached to the glass phial, this appears quite an old collection of

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Hematite on Quartz

$150

Wheal Cock, England

Abundant, well-formed crystals of metallic black Hematite measuring to 4 mm preferentially cover two prism

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Goethite on Quartz var. Amethyst (part polished)

$750

Levant Mine, England

A really different sort of specimen from Cornwall, England, in terms of both mineral associated habits and a

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Sphalerite with Quartz and Dolomite

$1,500

Alston Moor, England

Excellent individual, complex and lustrous black Sphalerite crystals to 1.5 cm are scattered over an elongated

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Pyromorphite on Coronadite

$8,000

MMM Mine, Australia

A magnificent cabinet specimen of lime and oil green Pyromorphite crystals on black Coronadite from the MMM

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Cassiterite

$400

St. Michael's Mount, England

St. Michael's Mount is a spectacular tidal island linked to the mainland by a short causeway. The

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Cassiterite

$900

Krásno, Bohemia

The mining district around Krásno in the Horní Slavkov district of the Czech republic was a tin-tungsten

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Quartz

$1,500

Mount Ida, USA

Mention Arkansas to any mineral collector and their first thought is Quartz. OK, if you don’t then there

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Pyromorphite on Coronadite

$10,000

MMM Mine, Australia

This magnificent cabinet specimen of oil green Pyromorphite on black Coronadite is from the MMM mine at Broken

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Tausonite with Lamprophyllite and Aegirine

$200

Murunskii Massif, Russia

I have to be honest and say, if this specimen were entering a Beauty and the Beast contest, it would sit more

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Spinel

$4,500

Luc Yen, Vietnam

The Luc Yen mine in Yenbai Province, Vietnam, works a deposit rich in various gem minerals, one of which is

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Groutite

$600

Emilie Mine (Bülten-Adenstedt Mine), Germany

Groutite is a rare manganese hydroxide that is known to form excellent crystallised specimens at the Emilie

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Lepidocrocite

$750

Herdorf, Germany

This small cabinet specimen is an excellent example of Lepidocrocite from the polymetallic mine at Herdorf in

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Quartz with Hematite

$500

Egremont, Cumbria

A fine example of double terminated Quartz crystals richly covering a bed of Specular Hematite from the iron

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Cassiterite

$250

Harriet Lode, UK

This rich large miniature specimen of bright, sparkling Cassiterite crystals of the variety known as Diamond

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Cassiterite

$250

Old Beam Mine, England

Looking at this small cabinet specimen of Cassiterite on a partly kaolinized granite matrix, it is apparent it

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Cassiterite

$300

Camborne, England

This well crystallised Cassiterite comes with no specific mine name but is from the Camborne mining district

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Titanite with Rutile, Actinolite and K Feldspar var. Adularia

$4,500

Teufelsmühle, Salzburg

The mindat page shows an excellent photo by Günter Grundmann of the Teufelsmühle and to put it mildly, it

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Cassiterite with Sphalerite and Quartz

$650

Viloco Mine, Bolivia

This intriguing miniature Cassiterite with Sphalerite and Quartz is from the Viloco mine, a mine set in the

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Hübnerite with Quartz

$3,500

Mundo Nuevo, Peru

The manganese-tungsten oxide Hübnerite forms high quality crystals in the tungsten deposits close to the town

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Cassiterite

$300

Huanuni mine, Bolivia

Highly lustrous, metallic jet-black crystals of Cassiterite measuring to 1.5 cm form a miniature domed mass

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Creedite

$2,000

Santa Eulalia District, Chihuahua

It is interesting to note that of the 185 valid minerals listed in mindat from the Santa Eulalia District, in

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Hematite

$800

Rio Marina, Italy

One of the most well-known mineral species from the island of Elba is Hematite. This beautifully crystallised