0/4 mm (1 kg) washed sand porphyry grit

WASHED SAND PORPHYRY GRAIN 0/4 mm (1 Kg).

Porphyry (rhyolithic ignimbrite) is a magmatic rock which constitutes one of the last effusive units of the Et Permian volcanic complex (270 Ma) of the Atesina region.

The structure of the porphyritic rock with 35-40% (by volume) of well crystallized minerals in a microcrystalline or glassy base paste.

The minerals are, in volume and in decreasing order of abundance: quartz, sanidine, plagioclase, rare biotite.

MEDIUM CHEMICAL ANALYSIS

SiO2: 74.14%

P2O2: 0.08%

Al2O3: 13.01%

K2O: 4.69%

Fe2O3: 1.34%

FeO: 0.42%

MnO: 0.05%

CaO: 0.78%

Na2O: 2.70%

TiO2: 0.16%

MgO: 0.36%

H2O: 0.62%

PC: 1.93%

TECHNICAL FEATURES

Hazardous substances release : NDP;

Flexural strength : 25.2 MPa;

Durability of flexural strength before frost : 23.4 MPa;

Durability of flexural strength after 56 frost cycles : 25.2 MPa;

Apparent density : 2574 Kg / mc;

Abrasion wear : 14.8 mm;

Water absorption at atmospheric pressure : 0.6%;

Compressive strength: 122 MPa;

Durability of compressive strength before frost : 167 MPa;

Durability of compressive strength after 56 frost cycles : 165 MPa.

FUNCTIONAL CHARACTERISTICS AND FIELDS OF USE

Natural inert material, ideal for:

? to create substrates for plants that need silica;

? decorative if placed above the root system of potted plants or on the ground;

? as a substrate for aquariums where you want to rebuild a seabed made up of real aquatic plants;

Mulch flower beds or garden areas where you want to avoid the growth of herbs or weeds.

NB: NEWS ON PACKAGING

It should be noted that the product will arrive inside a bag (with a total weight of 1 kg, as specified in the title of the advertisement) labeled and packaged, according to the terms of the law, by the employees of Geosism & Nature sas