It s the question of rocks, what kind of rocks are rocks?

1. Marble: The texture of the rock surface of marble is delicate, and it is often used as a wall or floor. Since marble is metamorphosed from limestone, the main component is calcium carbonate, so it is also a raw material for making cement.

Marble is soft and delicate, making it a good stone for sculpture, and many famous statues are made of marble, such as the famous Venus statue. Others, such as wall cladding or ornamentation, are also often made of marble, such as vases, ashtrays, tables and other household items.

2.Granite: The native granite can only be seen in Kinmen, so almost all of the old houses in Kinmen are made of granite. The granite used in temples in Taiwan comes from Fujian and is mostly used for dragon pillars, floor tiles, and stone lions in temples.

3.Slate: Because it is easy to crack into thin slabs and is easy to obtain in mountainous areas, the aborigines still use slate as a building material to build slate houses or walls.

4.Conglomerate: Some conglomerates contain pebbles and sand, and they are poorly cemented, which is easy to disperse, for example, this kind of conglomerate is found in the Quaternary Toushan Formation in western Taiwan, in which pebbles and sand are building materials.

5.Limestone: The most common limestone in Taiwan is formed from coral, commonly known as coral reef limestone. In Penghu, coral reef rocks are commonly known as stones, and residents use them as building materials for fences to shelter from the strong northeast monsoon and protect crops.

6.Mudstone: Since its main component is clay, it has been used as a raw material for bricks and pottery since ancient times.

7.Andesite: Due to its hard material, it is also commonly used as dragon pillars for temples, stone carvings on walls, tombstones, floor tiles, etc.

Hope it helps.

Limestone, which is used to make cement.

Gypsum is used as an additive in cement manufacturing and tofu as a coagulant.

Agate, crystal (quartz crystal), etc., made as handicrafts.

Rock is a solid aggregate of one or several minerals and natural glass with a stable shape. Rocks composed of one mineral are called monooretic rocks, such as marble composed of calcite, quartzite composed of quartz, etc. Rocks composed of several minerals are called complex rocks, such as granite composed of minerals such as quartz, feldspar and mica, gabbro composed of mafic plagioclase and pyroxene, etc.

Rock is a solid aggregate of one or several minerals and natural glass with a stable shape. Rocks composed of one mineral are called monooretic rocks, such as marble composed of calcite, quartzite composed of quartz, etc. Rocks composed of several minerals are called complex rocks, such as granite composed of minerals such as quartz, feldspar and mica, gabbro composed of mafic plagioclase and pyroxene, etc.

Rock is a solid aggregate of one or several minerals and natural glass with a stable shape. Rocks composed of one mineral are called monooretic rocks, such as marble composed of calcite, quartzite composed of quartz, etc. Rocks composed of several minerals are called complex minerals, such as granite composed of minerals such as quartz, feldspar and mica, gabbro composed of mafic plagioclase and pyroxene, and so on.

Rock is one of the materials that make up the earth's crust and is the main component that makes up the Earth's lithosphere. Feldspar is the most important rock-forming component of the earth's crust, accounting for 60%, and quartz is the second most abundant ore.

Rocks are classified according to their genesis, structure, and chemical composition, with most rocks containing silica (SiO2) and the latter component of the earth's crust. The amount of silicon in a rock is one of the important factors that determine the properties of a rock.

Rocks were an important tool of early human beings and were of great significance in human evolution. Therefore, the first period of human civilization is known as the Stone Age. Rocks have always been an important material and tool for human life and production.

1. Hard rock. 2. Huge rocks. 3. Dazzling rocks.

4. Hideous rocks. 5. Smooth rocks. 6. Protruding rocks.

Adjectives in Chinese are mainly used to describe or modify nouns or pronouns, indicating the nature, state, characteristics or attributes of people or things, and are often used as definite sentences, and can also be used as predicates or complements.

Grammatical characteristics of adjectives:

1. Adjectives mainly act as predicates and predicates in sentences.

2. Most of the qualitative adjectives can be modified by the adverbs of degree "very" and "too".

3. The overlapping form of the two-syllable nature adjective is "aabb" ("aabb's" or "aabb"); Most monosyllabic adjectives overlap in the form "aa" ("aa's" or "aa"); The overlapping form of a two-syllable state adjective is "abab"; Some two-syllable adjectives can also overlap in the form of "a in ab".

Hard rock, rare rock, durable rock, rose-colored rock, strange-shaped rock, beautiful colored rock.

Smooth, steep rocks.

Tuff is a kind of volcaniclastic rock, and more than 50% of the particles of the volcaniclastic material are less than 2 mm in diameter, and the composition is mainly volcanic ash, and the appearance is loose, rough or dense, and the layered is called layered tuff; Due to the different ingredients, the colors are diverse, such as fuchsia, gray-white, gray-green, etc. Tuff is a commonly used building material, and can also be used as a raw material for the manufacture of cement and for the extraction of potash fertilizers.

Features. 1.Crystalline vitrassic tuff:

The color is mainly gray-white, tuff structure, block structure. The content of crystal chips is less than 10%, and the crystal chips are composed of quartz, feldspar and a small amount of dark minerals. The glass chip content is 3-10%, vitreous.

Tuff cementation, massive structure, hard rock, thick - very thick layered. It is produced at a distance from the crater.

2.Tuff: mainly grayish-white, the crystal chip characteristics are the same as above, but the crystal chip content is 10-30%. Tuff structure, block structure. It is produced at a distance from the crater.

3.Fused tuff: crystal chip characteristics are the same as (1), gray-dark gray, lava structure, massive structure, cementation is lava cementation, and the rock is dense and hard.

4.Rhyolite tuff: crystal chip characteristics are the same as (1), gray-dark gray, rhyolite bands (black and white) clear, rhyolite structure, massive structure, lava cementation, produced close to the crater, the rock is dense and hard.

Other neutral volcanic rocks are: andesite, rough face rock, and the absence of quartz is its main characteristic. Mafic and ultramafic (pyroxene, amphibole-bearing) volcanic rocks are less common.

Tuff is a volcaniclastic rock, mainly composed of <2mm of volcaniclastic material, and its content accounts for more than 70%. This is a fused volcaniclastic rock. It is characterized by the composition of pyroclastic materials including rock cuttings, crystal chips, plastic glass chips, slurry chips and volcanic dust, among which plastic glass chips and slurry chips are its characteristic components. The characteristic structural structures of fused tuff are columnar joints, pseudorhyolite structures and plastic structures.

It is mainly composed of volcaniclastic matter of <2mm, and its content accounts for more than 70%. The colors are varied, including gray-white, white, red, pale green, purple, etc., and sometimes patchy color rings can be seen. The appearance is loose, porous, and rough.

The debris content is less than 2 mm and accounts for more than 70% of the total content. The appearance of tuff is loose, porous and rough.