Going to PDAC – meet and talk


A last minute decision – I am traveling to Toronto to attend PDAC 2016. It’s the perfect place to meet and talk: Angola, Mozambique, Brazil and Portugal, diamond and other gems, Nb-Ta and other pegmatite minerals, tungsten, gold, ferrous and base metal deposits, industrial minerals, natural stone. Challenges and opportunities. Where and when can we … Continue reading Going to PDAC – meet and talk

AZUL – Blue-gray ornamental limestone varieties from Portugal


There are several current varieties of grayish/blue limestone, all from the same general region of Portugal: the Mira de Aire and Candeeiros Range in the West of Portugal (the Azul Cascais limestone reserves nearby Lisbon are virtually depleted or inaccessible due to urban sprawl). Those varieties are: Vidraço Ataíja Azul: Very hard compact limestone, finely … Continue reading AZUL – Blue-gray ornamental limestone varieties from Portugal

A new beautiful fossiliferous limestone from Portugal


NEW TO THE MARKET LIMESTONE While looking for bluish-gray (or grayish-blue) limestone – a request from a potential client, we were shown a new variety of fossiliferous ornamental limestone. It’s a beautiful stone, its mining just starting. Additional photos of in the rough and sawn exposed outcrops and polished sample slabs of this new variety … Continue reading A new beautiful fossiliferous limestone from Portugal

Portuguese marble: color and textural variation


Marble is a natural stone type extracted, processed and used in monuments, buildings and pavements in Portugal for millennia. Portuguese marble is used all over the world; in Portugal, at least since Roman times. Small samples (and photos) hardly capture the full variation range of color and texture of natural stones. Even so, the picture above … Continue reading Portuguese marble: color and textural variation

Portuguese granite: color and textural range


Granite is a natural stone type extracted, processed and used in monuments, buildings and pavements in Portugal for millennia. Small samples (and photos) hardly capture the full variation range of color and texture of natural stones. Even so, the picture above tries to depict some of the Portuguese granites beauty. The image was (laboriously) created … Continue reading Portuguese granite: color and textural range

Portuguese limestone: textural and color range


Limestone is a natural stone type extracted, processed and used in buildings and pavements in Portugal for many centuries. Small samples (and photos) hardly capture the full variation range of color and texture of natural stones. Even so, the picture above tries to depict some of the Portuguese limestones beauty. The image was (laboriously) created … Continue reading Portuguese limestone: textural and color range