Volcanic stone, volcanic lava 3/5 mm (pallet of 50 bags of 33 lt)

VOLCANIC LAPILLO, 3/5 mm VOLCANIC LAVA (pallet of 50 bags of 33 lt).

Pumice and lapilli are the product of explosive volcanic eruptions formed as a result of a violent expansion of gases dissolved in lava of acidic chemical composition: the rapid cooling of the rock prevented its crystallization, trapping the gases inside and generating minerals alveolar expanded in a more or less accentuated way.

In fact, during the solidification phase, the vapors present in the magma, suddenly released, caused the swelling of the entire mass of the magma and during this rapid cooling phase, the differences in the physical structure of the various volcanic inert formed from a magma with a lower silica content.

The lower viscosity and the slower cooling of the lava have facilitated the escape of a certain quantity of the gases present in the magma.

Minerals were formed characterized by vacuities with an average diameter greater than those of pumice but of a decidedly lower number.

MEDIUM CHEMICAL ANALYSIS

SiO ₂ : 56%

At ₂ O ₃ : 16.5%

K ₂ O: 4.9%

Fe ₂ O ₃ : 6.5%

CaO: 8.8%

Na ₂ O: 0.8%

TiO ₂ : 3.1%

MgO: 1.2%

TECHNICAL FEATURES

pH: 7.0;

CATION EXCHANGE: 18 meq / 100g.

FUNCTIONAL CHARACTERISTICS AND FIELDS OF USE

Lightweight natural inert, ideal for:

? rooting substrate (sowing, cuttings, transplants, soilless crops and hydroculture);

? preparation of universal molds;

? preparation of specific soils (annuals, acidophilic plants, succulents, houseplants, lawns?);

? preparation of professional soils for outdoor horticultural nurseries and protected crops;

? mulch flower beds or areas of the garden where you want to avoid the growth of grasses or weeds;

? hydroponic crops;

? land amendment;

? hydroculture;

? drainage;

? support surface for vases;

? thermal insulation.