The composition of granite

    Granite is a long, two-granite, granite base, the mineral composition of andesite.

    Granite is long: red meat, grain is the main feldspar, for hard rock lithology. Its use is widespread, can be made into granite panels, granite tombstones, granite sculpture, granite roadside stone, granite stone, and so on Blind Pass indoor and outdoor granite products.

    two-granite. On red meat, spot-like structure, blocky structure. The main ramp from feldspar, K-feldspar, quartz and a small amount of hornblende and biotite, iron titanium oxide component. Porphyroblast is K-feldspar mineral, up to 1cm.

    Gray two in the fine-grained biotite granite, was gray, fine-grained granite structure, blocky structure by plagioclase feldspar (35% ~ 40%), K-feldspar (25% ~ 33%), quartz (25% ~ 30%), biotite (5 % ~ 8%) and a small amount of magnetite, apatite, brown curtain stone, zircon and other mineral composition. Trading numbered "658."

    Discussion of fine red meat and two - mica granite, pale red meat, fine-grained granite structure, massive structure, the K-feldspar (30% ~ 35%), plagioclase feldspar (30%), quartz (30%), biotite (5%) and a small amount of apatite , brown curtain stone, magnetite, zircon and other mineral composition. Trading numbered "657."

    A small number of black granite for pyroxene diorite porphyry, black spots, macular structure of the matrix, since the shape of a half - he fine-granular structure.

    Two of biotite granite of the chemical constituents: SiO2 73.65%, 13.40% Al2O3, 2.11% Fe2O3, 3.87% Na2O, K2O 3.40%.

    Physical properties: 174.0 ~ 195.8MPa compressive strength, flexural strength 13.2 ~ 15.3MPa, bulk density g/cm3, Shaw hardness of 86 to 88 degrees.

    Alkali granite. Alkali granite intrusive Permian strata in the emplacement time 261.5 ± 2.7 Ma. Mineral composition of the fringes of feldspar, quartz and plagioclase feldspar based. Chemical composition rich silicon, alkali - rich, rich REE, A / NKC = 0.87 to 1.04, LREE / HREE = 2.41, and has a strong negative Eu anomaly. trace elements of Cu, Au, W, Sn, Pb obvious enrichment, a rock containing tin-metal ore-bearing rock, tin-metal mineralization favorable. in granitic magma evolution process, accompanied by Sn、Mo、Fe、Nb、Ta、REE、Cu、Pb、Zn、Au, According to some of the internal and external distribution of the rock band and rock external contacts.

    Red meat shallow, rough spot-like structure, blocky structure. Mainly by biotite, and K-feldspar, plagioclase feldspar and quartz composition, containing trace compounds. As matrix biotite, feldspar and quartz grain size generally 0.5-0.8cm, K-feldspar crystal plaque was 1-5cm.

    Andesite. Quartz, feldspar, hornblende, and pyroxene. The equivalent of diorite, acid-rock movement of the rock into the transitional rock, which ranged from rhyolite and among neutral igneous basalt. Isotype Plaque rock arguments, contained porphyroblast often fringes of the ramps feldspar, and one or more dark minerals, such as amphiboles, pyroxene, mica, feldspar and which remained in important positions. Andesite color, it is usually more rhyolite dark, but light-colored mineral content, more still dark.

    Andesite of minerals contained within the different characteristics, such as quartz andesite, hornblende andesite, ordinary pyroxene andesites, pyroxene andesites, 2 pyroxene andesites, 2-hornblende andesite; Basalt and the same distribution of igneous rocks of the most extensive one.