Succuru

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

The reddish, distinguished alkali feldspar crystals, the distinctive, much smaller blue quartz surrounded by black, fine mica scales are noticeable for this dimension stone. 

Petrogenesis

This gneiss was probably generated under high pressure and temperature from volcanic rock of granite composition.

Hardness	Hard Stone
Structure Type	Homogeneous Structure
Synonyms	Azul Portorello, Red Blue Succuru
Group	Metamorphite
Petrographic Assignment	Gneiss
Age	570 m. years (Pre-Cambrian)
Colouring Minerals	Reddish alkali feldspar, blue-violet quartz, black biotite
Average Hardness	6-7 (according to Mohs's hardness scale 1-10)
Deposit	Brazil, Pernambuco, Yucuru