Tuff 0/2 mm (28 kg)

TUFF 0/2 mm (28 Kg).

Neapolitan yellow tuff is a pyroclastic rock characterized by a prevalence of ash of various granulometry, with inclusions of pumice and lava fragments, deriving from explosive eruptions of different volcanic centres, which occurred in the Campi Flegrei caldera between 12,000 and 10,000 years does. It has a straw yellow color, scratchable with the nail and with typical characteristics of a good building stone, furthermore, being mainly made up of aluminum, potassium, calcium and magnesium oxides, it does not undergo chemical processes of oxidation or hydration .
The physical and mechanical characteristics are highly variable from place to place and even in the same locality. Commercial denomination Neapolitan yellow tufo for the load-bearing walls
Geological classification Vulcanoclastite connected to an eruptive episode that occurred in the Campi Flegrei about 12,000 years from the present, consisting of pumice and fragments of obsidian, lithics and crystals immersed in a deeply altered ash matrix with the formation of zeolites and subordinately clayey materials.

AVERAGE CHEMICAL ANALYSIS

SiO ₂ : 60.0%

Al ₂ O ₃ : 16.0%

₂ O: 3.0%

Fe ₂ O ₃ - FeO: 5.0%

CaO: 2.0%

_Na2O : 3.0%

MgO: 1.0%

₂ O: 10.0%

TECHNICAL FEATURES

MINERALOGICAL COMPOSITION: the main minerals that distinguish it are phillipsite and chabasite for the zeolites, smecite and illite for the clays, while the few phenocrysts present are made up of alkali feldspar , salitic or diopsic clinopyroxenes , biotite and plagioclase ;

STRUCTURE: pseudoeutaxitic;
HARDNESS: low
RESILIENCE: poor

BREAKABILITY: Good
SEGABILITY: good
SCULPTABILITY: good

POLISHABILITY: poor
DURABILITY: poor

FUNCTIONAL CHARACTERISTICS AND FIELDS OF USE

Lightweight natural aggregate, ideal for:

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

? preparation of universal soils;

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

? preparation of professional soils for outdoor horticulture and for protected crops;

? land amendment;

? hydroculture;

? drainages;

? support surface for vases;

? thermal insulation.

NB: PACKAGING NEWS

It should be noted that the product will arrive in a bag (with a total weight of 20 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