Metals and Minerals

Metal minerals refer to minerals with gold properties, with metal or semi-metallic luster, with a variety of metal colors, such as lead gray, iron black, golden yellow, etc.,
opaque, non-conductive and good thermal conductivity. Most of the compounds of heavy metal compounds are mainly sulfides and some oxides, a few of which are metallic
elements, such as natural gold, and a small number of metal properties, such as sphalerite, cinnabar, cassiterite, etc., are also metal minerals. With the exception, graphite has
metallic properties, but it does not belong to metal minerals.

Metal minerals include ferrous and non-ferrous metals. Among them, non-ferrous metals can be divided into five categories: non-ferrous heavy metals, non-ferrous light
metals, rare metals, precious metals and semi-metals. Ferrous metals refer to iron and iron-based alloys, sometimes including manganese and chromium. Non-ferrous metals
are important basic materials, which are widely used in various fields of national economy and national security, which refer to all metals except iron and iron-based alloys
(sometimes including chromium and manganese). Non-ferrous heavy metals refer to non-ferrous metals with a specific gravity of more than 4.5, such as copper, lead, mercury,
 etc., while non-ferrous light metals refer to non-ferrous metals with a specific gravity of less than 4.5, such as aluminum, magnesium, sodium, calcium, etc. Rare metal refers
to a small and dispersed non-ferrous metal in the earth's crust. Precious metals are non-ferrous metals with low content, high specific gravity (10.4-22.4), high melting point
and high price, such as gold, silver and so on. Semi-metal refers to non-ferrous metals between metal and non-metal, such as silicon, selenium, tellurium, boron and so on.

Physical properties of metals
1.Under room temperature, it is generally solid (mercury is liquid) and with metallic luster.
2.Most are silver-white (copper is purplish red, gold is yellow)
3.Good thermal conductivity, electrical conductivity and ductility.

Aluminum: the most abundant metal element in the earth's crust
Calcium: the most abundant metal element in the human body
Iron: the metal with the largest annual output in the world (iron > aluminum > copper)
Chromium: the metal with the highest hardness
Silver: the metal with the best conductivity and thermal conductivity (silver > copper > gold > aluminum)
Tungsten: the metal with the highest melting point
Mercury: the metal with the lowest melting point

The main problem in metal mineral exploration is how to increase the depth of exploration and improve the ability to distinguish anomalies. Only by accurately understanding
the causes of physical anomalies can we correctly distinguish between ore and non-ore anomalies. The results of geophysical prospecting must be interpreted and inferred
comprehensively in combination with geology and geochemical prospecting in order to improve the effect of geophysical prospecting for metal deposits. The geological
problems in the process of prospecting are solved by using the geophysical prospecting methods in metal mining areas in the past, and indirect prospecting is carried out. A
certain metal deposit is formed in a certain type of geological structure, so the geophysical prospecting method is used to find this structure. In addition, citing new scientific
and technological achievements and making use of new geophysical parameters is an important aspect to expand the scope of application of metal mineral exploration and
improve its geological effect.