Labrador Antico - Stone - Materials - Draenert
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Labrador Antico

The close-up view of each stone type shows a relatively true image of the crystalline structure and the colouring. This is suitable for grained slabs to a limited extend only. In regard to the colour matching, please take an original sample of the stone from your furniture store as a basis.

Petrography

Labrador Antico is a light-brown, medium grain rock, which consists of plagioclase feldspar; almost as the only mineral content. Depending on the position in a room and view angle, single, relative evenly distributed shimmering light-blue to green-bluish labradorite crystals stand out on the polished surface. The magnificent blue shimmer originates from microscopic fine separation lamella within the labradorite crystals. 

Petrogenesis

The geologist calls plutonic rocks anorthosite, in which the calcium content dominates in the feldspar. Labrador Antico consists mainly of labradorite. Anorthosite occurs as single pluton (plutonic rock complex), more often though as layers and veins in differentiated gabbro-pluton. 
Due to the very long cooling-down time over many millions of years magma crystallised in massive, medium to coarse-grain plutonic rock.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms Blue Antique, Brown Antic, Falcon Eye
Group Plutonic rock - Plutonite
Petrographic Assignment Granite - Anorthosite
Age 600 Million years (Pre-Cambrian)
Colouring Minerals Violet-brown feldspar (blue shimmering, depending on lighting direction), little bronze-coloured pyroxene
Average Hardness 6-7 (according to Mohs's hardness scale 1-10)
Deposit Norway, near Egersund