The external characteristics of olive, the basic characteristics of peridot

(1) Chemical composition: peridot is mafic iron silicate, and the chemical formula is (mg, Fe)2SiO4

2) Crystal system: orthorhombic crystal system.

3) Crystallization habit: It is rare for crystals to be intact, and they are often produced in the form of columnar crystals, fragments or round pebbles. Vertical stripes are common on cylindrical surfaces (Figure 9-9-1).

4) Cleavage: Incomplete.

5) Hardness:.

6) Relative density:.

7) Refractive index:.

Figure 9-9-1 Crystal morphology of olivine.

8) Birefringence Index:.

9) Dispersion: Medium,.

10) Optical properties: biaxial crystal, positive photogenicity.

11) Luster: glass luster (sometimes greasy luster).

12) Color: light yellow-green to dark green, light greenish brown to brown (rare).

13) Pleochroism: weak, green to light yellow-green.

14) Inclusions: often contain chromite crystals, which are surrounded by flat stress lines and look like the leaves of water lilies. When containing mica flakes, it has a slight brownish tint.

Peridot from Hawaii contains small bubble-like vitreous beads. In larger peridots, inclusions tend to have double shadows due to their large birefringence index.

15) Absorption spectrum: The color is caused by iron (self-colored), and gemstones generally show the absorption spectrum typical of iron, with three main absorption bands in the blue region (Fig. 9-9-2).

Figure 9-9-2 Absorption spectrum of olivine.

Olives like warmth, and the growth period needs appropriate high temperature to grow vigorously, and the fruit is good for slow spine;

The growth of olives is generally above 20 per year, and it is best to grow in areas without severe frost damage in winter, and can tolerate a short period of minus 3 in winter.

The rainfall required for the growth of olives is between 1200 and 1400 mm;

The wild soil adaptability of olive growth is wider, and it can generally be cultivated along rivers, hills and mountains, red and yellow soil, gravel soil and other places, as long as the soil layer is deep and well drained, it can grow well.

First: the first bite of the olive, hard, rough. The taste is sour, and there is a strange smell.

After a while, the bitter and astringent taste disappears, and the sweet taste comes out everywhere on the tongue, as sweet as a spring, and umami, very fresh and fresh, but it is different from MSG that makes people greasy.

Second: Olive olives are native to southern China, and are cultivated in Fujian, Taiwan, Guangdong, Guangxi, Yunnan and other regions, and are good windbreak trees and street trees. Timber can be used for shipbuilding and sleepers.

Manufacture of furniture, agricultural tools and building materials. The fruit can be eaten raw or pickled; Medicinal treatment of laryngitis, coughing up blood, polydipsia, enteritis diarrhea. Nuclear for carving, also medicinal, effective in treating fish bones and throat.

The kernels can be eaten, and the oil can also be extracted, and the oil is used to make soap or as lubricating oil.

Third: olives are rich in nutrition, the pulp contains protein, carbohydrates, fat, vitamin C and minerals such as calcium, phosphorus, iron, etc., of which the content of vitamin C is 10 times that of apples, pears and peaches, and the calcium content is also very high, and it is easy to be absorbed by the human body, especially suitable for women and children.

Olive is a small green oval fruit, native to southern China, and cultivated in Fujian, Guangdong, Yunnan and other provinces in China. Wild olives are mostly found in ravines and hillside forests below 1,300 meters above sea level. Olives are good windbreak trees and street trees, and wood can be used to make boats, sleepers, furniture, farm tools, etc.

Olive is a small green oval fruit, native to southern China, and cultivated in Fujian, Guangdong, Yunnan and other provinces in China. Wild olives are mostly found in ravines and hillside forests below 1,300 meters above sea level. Olives are good windbreak trees and street trees, and wood can be used to make boats, sleepers, furniture, farm tools, etc.