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7665 mineral photos
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Last articles

Prehnite - The Epimorph Champion

Prehnite is a common calcium silicate, which can form outstanding crystalline aggregates. Its nice crystal forms and pleasing colors make it a very popular among collectors. Prehnite is also used by jewelers and it is an important metamorphic index mineral.


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Cassiterite - the tin ore mineral overview

Cassiterite constitutes the chief ore of tin, as well as highly aesthetic and popular collector specimen. Tin was a foundation of the beginning of metal smelting in the early Bronze Age and still constitutes one of the core materials of modern technology.


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Cuprite - The Ruby Red Copper Oxide

Cuprite is a minor ore of copper, usually appearing as secondary encrustations on primary copper ores. Nice and rare cuprite crystals are a popular among collectors. It is prized as a gemstone because of its vivid red internal reflection, but its softness precludes wide use in jewelry.


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Titanite - The Sphene

Titanite is a common titanium silicate, which can form outstanding and gemmy crystals. It is an attractive gemstone and collector material with vibrant green and yellow crystal forms. However, its low hardness and intrinsic fragility makes it unsuitable for commercial jewelry use, keeping it from becoming a mainstream product.


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Hydraulic Gold Mining

Hydraulic mining is easy and efficient method to move huge amounts of dirt. It was used by Romans in their placer gold mines and later became very popular during California and Alaska gold rush events.


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Hemimorphite

Horní Rokytnice, Czech Republic

60 x 40 mm

Tyrolite

Novoveská Huta, Slovak Republic

12 x 10 mm

Bertrandite

Obrázek I. Písek, Czech Republic

5 x 3 mm

Bertrandite

Obrázek I. Písek, Czech Republic

14 x 8 mm

Quartz

Grimsel area, Switzerland

80 x 65 mm

Baryte

Dřínová, Czech Republic

60 x 55 mm