Question

According to the mohs hardness scale, whats the approximate hardness of topaz.​

Answer 1

According to the Mohs Hardness Scale, 8 is the approximate hardness of topaz.

Step-by-step explanation:

One of the most important tests for identifying mineral specimens is the Mohs Hardness Test. This test compares the resistance of a mineral to being scratched by ten reference minerals known as the Mohs Hardness Scale (see table at left). The test is useful because most specimens of a given mineral are very close to the same hardness. This makes hardness a reliable diagnostic property for most minerals.

Mohs Hardness Scale

Mineral

Hardness

Talc 1

Gypsum 2

Calcite 3

Fluorite 4

Apatite 5

Orthoclase 6

Quartz 7

Topaz 8

Corundum 9

Diamond 10

Friedrich Mohs, a German mineralogist, developed the scale in 1812. He selected ten minerals of distinctly different hardness that ranged from a very soft mineral (talc) to a very hard mineral (diamond). With the exception of diamonds, the minerals are all relatively common and easy or inexpensive to obtain.

Answer 2

According to the "Mohs hardness scale", the approximate hardness of topaz is found to be 8.

Step-by-step explanation:

• Mohs hardness scale is known as the "scale of hardness" used in mineralogy.

• Series of ten minerals which are measured from its characteristic, soft to hard. These minerals are arranged from lower to higher number.

• The invention was made in the year 1812 which was invented by a famous German geologist named Friedrich Mohs (1773-1839).