Synonyms Stones can have many aliases. This is due to language differences, supplier choice, coloquial trends or slang, or sometimes errors and ambiguity between rocks. Read more here. |
Blue Polar, Rasputin, Russischer Labrador |
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Category Commercial classification sometimes differs to the scientific, geological designation. In particular, some limestones are deemed marble especially if they take a high polish. Read more here. |
Granite |
Petrographic assignment | Anorthosite (Plutonite) |
Age | 600 million years (Pre-Cambrian) |
Colouring minerals: | Blue-grey / green-black feldspar, black pyroxene, black-green olivine |
Average hardness MOHS is the standard scale of hardness for minerals 1-10, with 10 being the MOHS of diamond. We also use the broad terms Hard and Soft for simplicity. Read more here. |
6-7 (Hard) |
Origin | Ukraine, Golovinske |
The images of each stone aim to give a faithful representation of the structure and colouring. The close-ups are generally taken from a sample around 100mm in height to get the detailing of the grain and crystals. The slab images are usually between 2000x1000mm and 3000x1900mm approximately, to give a more overall picture of the pattern.
This is for guidance only, when seeking a specific pattern and colour matching, please obtain a sample or arrange for the slab to be viewed in person. When placing the order, you may require a photo of the actual slab before production, the colour and character can vary significantly even throughout the same block within natural materials. Also monitor calibration, camera settings and lighting can all effect how the materials are perceived.
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Popular and typical usage
Petrology:A very coarse-grained, dark blue-grey anorthosite consisiting of blue-black feldspar. Anorthosite: A phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90-100%), and a minimal mafic component (0-10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present. The surface shimmers with blue-green flashes as viewing angle and lighting change. Black pyroxene, black-green olivine and silvery flakes of magnetite ore are interspersed with the crystals.
Petrogenesis:Consists predominantly of labradorite. Over millions of years cooling the magma crystallised into large, coarse grain plutonic rock.
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