Petrografic analysis
Density 2710 kg/m3 NS-EN 1936
Water absorption 0,1 % by weight NS-EN 13755
Flexural strength 34,3 MPa NS-EN 12372
Abrasion resistance 17,0 mm NS-EN 14157(A)
Slip resistance 72 SRV, dry NS-EN 14231
40 SRV, wet
Frost resistant
Mid-value after 48 frost/defrost cycles, natural riven material
Tested on honed C120. Method A: Wide Wheel abrasion test, Capon.
Honed C120
Honed C120
Mineralogy
Quartz 44 %
Mica 33 %

Feldspar 23 %

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Alta Quartzite from Norway is rich with grays and subtle veins. It is available in a wide variety of tile sizes, mosaics and slabs and is recommended for residential and commercial properties including floors, countertops and walls. It is slip resistant and water repellent.

Dark Grey
Surface finishing: 
Sawn, Honed,  Sandblasted and Brushed(Antique).
Usages:
Residential Usage
Exterior - Interior Flooring: Yes 
Countertops: Yes
Wall / Backsplash: Yes
Commercial Usage
Exterior - Interior Flooring: Yes 
Countertops: Yes
Wall / Backsplash: Yes
Exterior Usage: Yes
Available Size (cm):
10x10, 20x20, 25x25, 30x30, 30.5x30.5, 61x30.5, 40x40, 60x60, 60x30 ,80x100
thickness 1.0/1.2/1.5/2.0/2.5/3.0cm
Slabs(cm)
Small slab: 
180~240 up x 60 / 70 x 2 / 3cm /5cm
Big slab: 
240~300 x 120~200 x 2 / 3 / 5 cm
Cut to size
French Pattern & Ashlar Pattern Set Sizes: 
8”x8” ,12"x12",8”x16”,16”x16”,16”x24”
Cut to size, 120x60x2/3cm for wall cladding
Standard counter top: 
96"x25.5"x3cm, 108"x25.5"x3cm, 96"x26"x3cm, 108"x26"x3cm, 
96"x25.5"x2cm, 108"x25.5"x2cm, 96"x26"x2cm, 108"x26"x2cm, 
Vanity Tops: 
25'' x 19''/22'', 31'' x 19''/22'', 37'' x 19''/22'', 49''x19''/22'', 61'' x 19''/22''(Single or Double sinks) 
Edge profile: 
Bevel, Full Bull-nose, Half Bull-nose, OG, Laminated Bevel, Laminated Full Bull-nose, Laminated OG, etc...