stone of the month
June 2019


texts and images from: Natural Stones Worldwide


Azul Macaubas
information

A wavy, blue quartzite of the Precambrian period, colour caused by dumortierite, Portuguese "azul" = blue.
Mineral distribution on the average: quartz: 78%, dumortierite: 12%, muscovite: 10%.
Technical and physical characteristics: Bulk density according to ABNT NBR 12.766: 2,683 kg/dm³, bending strength according to ABNT NBR 12.763: 20,39 N/mm², compression breaking load according to ABNT NBR 12.767: ? 210,20 N/mm², abrasion resistance according to ABNT NBR 12.042 (Amsler): 0,54 mm (500 m), water absorption according to ABNT NBR 12.766: 0,11%, frost resistant, polishing possible, chemical resistance very good.
Mean ultimate loads for FZP-Anchor (Type M6, drillhole depth hv = 12 mm): tensile load: 6,4 kN (according to test results of the test laboratory at the Fischerwerke).
Reference: Domquartier/Magdeburg/Sachsen-Anhalt/Germany (2002, facing, architect: Bolles+Wilson).
Uses: Ornamental stone and for decorative craft objects.
Azul Macaubas is, according to technical and physical characteristics and mineral distribution absolutly identical with Azul Boquira, but it is from another quarry.

This stone internationally may be nominated as a granite. For the US- and Chinese market this is correct according to ASTM C 119 resp. GB/T 17670. But in the area of application of the European Standard (EN) this stone must be nominated as quartzite because the EN 12440 demands a scientific terminology for the denomination of natural stones, determined with a petrografic examination according to EN 12407 and 4.2 of prEN 12670. In case of doubt please ask your supplier.

origin Brazil (quarry RN 000006/Serra da Vereda/Macaubas e Boquira/Bahia/Nordeste)
synonyms Azul de Macauba, Azul de Macaubas, Azul de Maccauba, Azul do Macauba, Azul do Macaubas, Azul Macauba, Azul Maccauba, Azul Makauba, Azul-de-Macaubas, Azuldo, Azuldo Macaubas, Azzurro Macaubas, Blue Macauba, Blue Macaubas Quartzite, Granito Azul, Granito Azul Macaubas, Macauba, Macauba Azul, Macauba Blue, Macaubas Azul, Macaubas Blue, Macaubas Granito
suppliers

S O U T H A M E R I K A
"Blue Macaubas", quarry, blocks, slabs, tiles, cut-to-size: Somibras Sociedade de Mineracao Brasileira Lda., Brazil-04700-970 Aruja/SP; email: vendas@somibras.com; web: http://www.somibras.com;

"Azul Macaubas"quarry: GM Granitos e Marmores Ltda., Brazil-20061-030 Rio de Janeiro/RJ; email: info@bluemacaubas.com; web: http://www.bluemacaubas.com;

E U R O P E
Austria
"Azul Macauba", slabs, tiles, cut-to-size: Moerz Naturstein GmbH, A-8010 Graz/Austria; email: office@moerznaturstein.com; web; http://www.moerznaturstein.com;

Belgium
"Azul Macauba", slabs, tiles: Beltrami Natuursteen, B-8530 Harelbeke/Belgien; email: info@beltrami.be; web: http://www.beltrami.be;

Germany
"Macauba", slabs, tiles, cut-to-size: Rossittis GmbH, D-59439 Holzwickede/Germany; email: info@rossittis.de; web: http://www.rossittis.de;

"Azul Macaubas", slabs, tiles, cut-to-size: Josef Kusser GmbH & Co. KG, D-94529 Aicha/Germany; email: kusser@kusser.com; web: http://www.kusser.com;

Greece
"Azul Macaubas", slabs, tiles, cut-to-size: Moschou S.A, GR-57010 Vasiloudi/Greece; email: info@moschou.com; web: http://www.moschou.com;

Italy
"Azul Macaubas", slabs, tiles, cut-to-size: Marcolini Marmi S.p.A., I-37023 Grezzana(VR)/Italy; email: marcolini@marcolini.it; web: http://www.marcolini.it;

"Azul Macauba", blocks, slabs, tiles, cut-to-size: Henraux S.p.A., I-55046 Querceta (LU)/Italy; email: commercial@henraux.it; web: http://www.henraux.it;

"Azul Macauba", blocks, slabs, tiles: Marmi Lanza S.r.l., I-37020 Volargne/Italy; email: marmilanza@marmilanza.com; web: http://www.marmilanza.com;

"Azul Macaubas", slabs, cut-to-size: Antolini Luigi & C. S.p.a., I-37010 Sega di Cavaion (VR)/Italy; email: al.spa@antolini.it; web: http://www.antolini.it;

"Azul Macaubas", slabs, cut-to-size: Furrer S.p.A., I-54031 Carrara (MS)/Italy; email: furrer@furrer.it; web: http://www.furrer.it;

"Azul Macaubas": La Precisa S.r.l., I-37015 S. Ambrogio Valpollicella (VR)/Italy; email: info@laprecisasrl.com; web: http://www.laprecisasrl.com;

"Azul Macaubas", slabs: Marmi Graniti Favorita S.p.A., I-36045 Lonigo (VI)/Italy; email: favorita@granitifavorita.com; web: http://www.granitifavorita.com;

Portugal
"Azul Macaubas": Marbrito Lda., P-7161-909 Vila Vicosa/Portugal; email: marbrito@marbrito.com; web: http://www.marbrito.com;

A F R I C A
"Azul Macaubas": Marmonil Marble and Granite, Egypt-Cairo; email: sales@marmonil.com; web: http://www.marmonil.com;


Azul Macaubas, sample slab

Azul Macaubas, sample slab

Azul Macaubas, sample slab

Azul Macaubas, macro

Azul Macaubas, microphotograph
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