| Nature forms over time, e.g. believed due to weathering, mineralization or crystallization, landscapes and rocks in which the human imagination identifies often strange formations out of the real world. An example of this are agates that, generally outwardly unattractive pose, in their interiors of ... moreNature forms over time, e.g. believed due to weathering, mineralization or crystallization, landscapes and rocks in which the human imagination identifies often strange formations out of the real world. An example of this are agates that, generally outwardly unattractive pose, in their interiors often true works of art. |
| On the site of Sos Enattos mine exploitation in shafts and tunnels is known since the Roman times. In 1960, with the exploitation of the deposit, these tracks have been permanently deleted. Initially, it was operated in the mining of silver and galena and only in modern times to sphalerite... (Wri ... moreOn the site of Sos Enattos mine exploitation in shafts and tunnels is known since the Roman times. In 1960, with the exploitation of the deposit, these tracks have been permanently deleted. Initially, it was operated in the mining of silver and galena and only in modern times to sphalerite... (Written in german) |
| The metal extraction by ore leaching (mostly copper) was about 1,000 years BC. known in the Mediterranean, but there are also barely no written records. The in the Middle Ages and in the following Renaissance well-known different procedures were first described in detail by Georg Agricola 1556 in hi ... moreThe metal extraction by ore leaching (mostly copper) was about 1,000 years BC. known in the Mediterranean, but there are also barely no written records. The in the Middle Ages and in the following Renaissance well-known different procedures were first described in detail by Georg Agricola 1556 in his book "De Re Metallica Libri XII". A contribution by Peter Seroka |
| ... Wenn die Körner plattenförmige (laminae) Gestalt haben, so bezeichnet man diese Aggregate, je nach Größe, als schuppig oder blättrig (lamellar). Die individuellen Platten sind im Allgemeinen parallel, können aber auch um ein gemeinsames Zentrum gebogen sein und konzentrische Formen bilden. Wenn ... more... Wenn die Körner plattenförmige (laminae) Gestalt haben, so bezeichnet man diese Aggregate, je nach Größe, als schuppig oder blättrig (lamellar). Die individuellen Platten sind im Allgemeinen parallel, können aber auch um ein gemeinsames Zentrum gebogen sein und konzentrische Formen bilden. Wenn die Platten dünn und trennbar sind, bezeichnet man die Aggregate als blättrig oder schieferig. Wenn ein Mineral aus kleinen Schuppen besteht, wird es als glimmerartig bezeichnet. Beispiele: Calcit und Gips (rosettenartig), Glimmer (charakteristisch glimmerartig),Talk und manche Hämatitaggregate (schuppig) ... ein Beitrag von Perter Seroka |
| We do not thumble stones to get smooth and even things that look like the tumbled stones in the esoteric shops, but to discover the secret of the stone. We have thumbled stones in the spirator for years and have documented our experiences with stones, machinery, abrasives and polishing techniques. O ... moreWe do not thumble stones to get smooth and even things that look like the tumbled stones in the esoteric shops, but to discover the secret of the stone. We have thumbled stones in the spirator for years and have documented our experiences with stones, machinery, abrasives and polishing techniques. Our experience will help you to avoid errors and run approach to the subject. |