Mineral: Spodumene.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 10-100mm.
Packaging: Jumbo bags.
Spodumene is a pyroxene mineral which is a source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size. Spodumene occurs in lithium-rich granite pegmatites and aplites.
It is used in batteries, making lithium soap (it is used for high-temperature all-purpose lubricating greases), in metallurgy (increases melting metal fluidity, reduces veining, reduces melting temperature, increases electrical resistance, for welding – promotes fusing of metals, used with aluminum, cadmium, copper and manganese – makes high-performance and low density aircraft parts), pyrotechnic colorants, air purification, optics, organic and polymer chemistry, military (high energy additives for rocket propellants), nuclear applications and medicine (treating bipolar, schizoaffective disorders, major depression and cluster headaches). Lithium is extracted from these minerals: Amblygonite, Spodumene, Lepidolite.
Mineral: Beryl.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 5mm max.
Packaging: Jumbo bags.
Beryl is a mineral composed of beryllium aluminum cyclosilicate. Well-known varieties of beryl include emerald and aquamarine. Pure beryl is colorless, but it is frequently tinted by impurities; possible colors are green, blue, yellow, pink, and red (the rarest). Beryl can also be black in color. It is an ore source of beryllium.
In the 13th century, the first eye glasses were constructed using lenses made out of beryl, since at the time glass could not be made clear enough. Nowadays, the varieties of beryl colors make them great, although not very valuable, gem stones.
Mineral: Zinc ore.
Moisture: 0.0% max.
Granulometry: 10 mm.
Packaging: Jumbo bags
Zinc is a bluish-white glossy diamagnetic metal, though most common commercial grades of the metal have a dull finish. The metal is hard and brittle at most temperatures but becomes malleable between 100 and 150 °C. Zinc is a fair conductor of electricity.
Zinc makes up about 75 ppm (0.0075%) of Earth's crust, making it the 24th most abundant element.
Most common applications for Zinc are: anti-corrosion, batteries, alloys, paints, as a heat dispersing catalyst, protection from ultraviolet radiation, its’ semiconductor properties are used for varistors and photo copying products, for hydrogen production, wood preservation, organic chemistry, plays a great biological role, agriculture.
Mineral: Lead ore
Moisture: 0.0% max.
Granulometry: 10 mm.
Packaging: Jumbo bags
Lead is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. In 2014, the annual global production of lead was about ten million tons, over half of which was from recycling.
The properties of lead, combined with its relative abundance and low cost, resulted in its extensive use in construction, plumbing, batteries, bullets, weights, solders, pewters, fusible alloys, white paints, leaded gasoline, and radiation shielding.
Mineral: Copper ore
Moisture: 0.0% max.
Granulometry: 10 mm.
Packaging: Jumbo bags
It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement.
Mineral: Tantalite.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 5mm max.
Packaging: Steel drums.
Tantalum is a rare, hard, blue-gray, glossy transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as minor components in alloys.
Its main use today is in tantalum capacitors in electronic equipment such as mobile phones, DVD players, video game systems and computers. Tantalum, always together with the chemically similar niobium, occurs in the mineral groups tantalite, columbite and coltan (the latter is a mix of columbite and tantalite, though not recognized as a separate mineral species). Tantalum is considered a technology-critical element by the European Commission.
Mineral: Cassiterite.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 5mm max.
Packaging: Steel drums.
Tin is a silvery-colored metal that characteristically has a faint yellow hue. Pure tin after solidifying presents a mirror-like appearance similar to most metals.
In modern times, tin is used in many alloys, most notably tin / lead soft solders, which are typically 60% or more tin, and in the manufacture of transparent, electrically conducting films of indium tin oxide in optoelectronic applications. Another large application is corrosion-resistant tin plating of steel. Because of the low toxicity of inorganic tin, tin-plated steel is widely used for food packaging as tin cans.
Mineral: Niobium.
Moisture: 0.0% max.
Granulometry: 5 mm.
Packaging: Jumbo bags.
Columbite has a submetallic gloss, high density and is a niobate of iron and manganese.
Columbite contains varying amounts of thorium and uranium, which makes it radioactive to various degrees.
Mineral: Cassiterite.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 5mm max.
Packaging: Steel drums.
Cassiterite is a tin oxide mineral and is generally opaque, but it is translucent in thin crystals. Its luster and multiple crystal faces produce a desirable gem. Cassiterite is the most important source of tin today.
Physical properties of Cassiterite
Cassiterite has several properties that enable it to be found in minable quantities. Its adamantine luster, high hardness, light streak and high specific gravity are helpful in its identification.
Most sources of cassiterite today are found in alluvial or placer deposits containing the resistant weathered grains.
Mineral: Wolframite.
Radioactivity: Class 7.
Moisture: 0.5% max.
Granulometry: 5mm max.
Packaging: Steel drums.
Tungsten is a rare metal found naturally on Earth almost exclusively combined with other elements in chemical compounds rather than alone.
The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements discovered, melting at 3422 C it also has the highest boiling point at 5930 C. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work with.
Tungsten’s many alloys have numerous applications, including incandescent light bulb filaments, X-ray tubes (as both the filament and target), electrodes in gas tungsten arc welding, superalloys and radiation shielding. Tungsten’s hardness and high density give it military applications in penetrating projectiles. Tungsten compounds are also often used as industrial catalysts.