Rare Minerals

142 results

Nikischerite with Vivianite and Pyrite
 Huanuni mine, Bolivia
An ugly but excellent specimen of the very rare Na-Fe-Al sulphate Nikischerite from its type locality at the
Hocartite with Rhodostannite, Cassiterite, Ferberite and Sphalerite
 Oploca Mine, Jujuy
A complexly mineralised vein structure with dark grey well indurated slate on one side, the associated wall
 Rio Piracicaba, Brazil
A near-perfectly developed ex-matrix Phenakite crystal from Rio Piracicaba in Minas Gerais, Brazil.  This
 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
Miguelromeroite with Rhodochrosite
 Veta Negra Mine, Atacama
Pale salmon-pink crystals, some tinged buff-tan, of the rare species Miguelromeroite line a 20 x 5 mm vug in a
 Abundancia Mine, Antofagasta Region
A rich miniature specimen of turquoise blue rare Lemanskiite with lighter blue possible Lavendulan from the
 Pribram, Czech Republic
A sharp, single crystal of Whewellite measuring to 2.9 cm, with a very apparent steep termination from
Tyrrellite with Umangite and Klockmannite
 Eagle Claims U-Cu-Se occurrence, Saskatchewan
A small miniature displaying three rare selenide species from the remote Eagle Claims U-Cu-Se occurrence in
Nagyágite with Rhodochrosite
 Sacarimb (Nagyag), Romania
The Archduke Stephan Collection contained many rare mineral species, including this excellent specimen of the
Asisite, Britvinite and Hematophanite
 Kombat Mine, Namibia
A mixed ore specimen composed of granular Asisite, Britvinite, Hematophanite and Quartz from Kombat mine,
Ludlockite with Schneiderhöhnite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A terrific combination of a number of rare mineral species from the Tsumeb mine in Namibia.  A roughly
Malachite pseudomorph after Azurite with Gartrellite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A gorgeous small cabinet specimen of velvet textured, deep emerald-green Malachite pseudomorphs replacing
Lanthanite-(Ce) and Malachite
 Sneyd’s Level, Wales
Lanthanite-(Ce) is a rare cerium-lanthanum-neodymium carbonate whose type locality is the Britannia mine,
Native Silver with Dyscrasite
  Pribram, Czech Republic
A granular, milky quartz matrix is richly impregnated and coated with pinkish-silver Native Silver in hackly
 Gnade Gottes Mine, Lower Saxony
A tabular milky Quartz matrix is very richly shot-through with silvery-steel-grey Dyscrasite, a silver
Bournonite with Quartz
 Herodsfoot Mine, England
A first-class specimen of classic ‘cog-wheel’ ore, the lead-copper antimoniate, Bournonite, from Herodsfoot
 Tip Top Mine, USA
An excellent specimen of the very seldom encountered species Montgomeryite, a calcium-magnesium-aluminium
 Wheal Gorland, England
A granular, large thumbnail matrix of iron-stained milky Quartz, is richly coated with intergrown blades of
Paravauxite with Childrenite
 Llallagua, Bolivia
An excellent specimen of the rare hydrated iron-aluminium phosphate hydroxide Paravauxite as very pale-yellow
Jadeite (Emerald Jade)
 Uru Fluss, Myanmar (Burma)
Of the two types of jade, Nephrite and Jadeite, Jadeite is by far the most precious and sought-after species.
 Chelopech Au-Cu Mine, Sofiya Oblast
A thumbnail fragment of the very rare copper-gold telluride species Kostovite from its type locality of the
 Frongoch Mine, Wales
An excellent and rich micromount of the very rare lead thiosulphate, Steverustite, from its type locality at
 Nentsberry Haggs Mine, England
A very fine cabinet specimen of the rare barium-calcium carbonate, Barytocalcite, from Nentsberry Haggs mine
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A very rich thumbnail specimen of the rare mineral Leiteite displaying the characteristic
 Cabeça do Cachorro Claim, Amazonas
Ludlamite is a rare iron-manganese-magnesium phosphate and this very fine specimen shows the wonderful quality
 Potaro River, Potaro-Siparuni Region
An extremely rare specimen of the palladium-mercury alloy Potarite, a palladium amalgam (PdHg).  This
 Ojuela Mine, Mexico
A neat miniature of the rare zinc arsenate mineral Legrandite forming vivid acidic bright lemon-yellow
Wherryite with Diaboleite
 Mammoth-St. Anthony Mine, USA
A superbly-rich miniature of the lead-copper sulphosilicate Wherryite and lead-copper halide Diaboleite from
Sincosite with Minyulite
 Ross Hannibal Mine, South Dakota
A rare specimen of the calcium-vanadium phosphate Sincosite occurring as lime green tetragonal plates to about
 Broken Hill, Australia
A very rich specimen of the rare mineral Bannisterite from the Broken Hill Mining District of New South Wales,
 N'Chwaning Mines, South Africa
Small acid-yellow to much larger burnt toffee-yellow crystals of Sturmanite richly coat a pinkish-grey matrix
 Talnakh Cu-Ni Deposit, Eastern-Siberian Region
A polished ore-section mount of metallic grey areas in a 'Chalcopyrite'-like matrix from the Talnakh
 Portland Mine, Colorado
A large Quartz specimen is loaded with bright metallic yellowish to tin white crystals of the rare Gold
 Baia de Aries, Romania
A 5 x 4 cm area of a 1 cm thick Quartz plate is almost entirely encrusted with bright silver Sylvanite from
Köttigite-Parasymplesite series
 Ojuela Mine, Mexico
A particularly fine specimen of Köttigite-Parasymplesite series forming excellent displays of radial
 Wheal Gorland, England
A very fine and rich specimen of Liroconite from  Wheal Gorland, St. Day, Cornwall. Excellent blue to
 San José Mine, Oruro Department
The lead-silver-antimony sulphosalt mineral, Andorite, is seldom seen in collections and this fine specimen is
 Mansfeld Basin, Saxony-Anhalt
A miniature containing two nickel arsenate minerals, Maucherite and Nickeline, from the Mansfeld Basin in
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A rich small cabinet specimen of Beudantite and Segnitite, both occurring as equant micro-crystals and
Zincolivenite with Schultenite
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
Zincolivenite in bright green druse of intergrown crystals with the rare mineral Schultenite in
 Sacarimb (Nagyag), Romania
Abundant platy metallic grey crystals measuring to around 5mm of the rare mineral Nagyagite stand on
 Kipushi Mine, DR Congo (Zaire)
Kipushite is a copper-zinc phosphate and occurs on this specimen as lustrous turquoise-green micro-crystals
 Leadhills, Scotland
Substantial platy crystals of Leadhillite are seen atop the specimen in a cavity with crystals of
 Tsumeb Mine, Oshikoto Region (Otjikoto Region)
A sharply formed lustrous black crystal of Schneiderhohnite measuring to 1.2cm displaying the crystal habit to
Szenicsite with Powellite
 Jardinera No 1 Mine, Chile
A large and impressive specimen of the rare mineral Szenicsite, a copper molybdate, from the type locality at
Inesite with Orlymanite
 N'Chwaning Mines, South Africa
Crystalline radial botryoidal red-pink Inesite displays the light pink to good advantage around the edge of
 Barra do Salinas, Brazil
Hydroxyl-Herderite is a calcium-beryllium phosphate found in pegmatites at many localities but is uncommon at