Otta Rust Quartzite Fireplace

Formed before 800-400 million. years of sludge and deposits. Natural its surface smooth and glossy, rich bluish-black, crossed by short-lived core-gloss. In addition, the slate is turned in different directions reflect the light differently.
Water absorption - just 0.2% of the total weight of the slate.
The upper layers of the quarry sites of iron oxide, which is an oxidation with other minerals, giving a golden - brown tint. Thus, the higher levels of the pits is 1-7% iron oxide minerals, namely Rūdytė extracted shale - Otta Rust. His blue-black color suffused with warm hues ... from pale yellow to orange and golden brown.