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use the samples; diamond, dolomite, gneiss, and chalk and provide your analysis of composition and identification based on their identification characteristics.

Respuesta :

Histrionicus

Answer:

Diamond-

Physical identification characters:

Color-  White or Colorless

Lusture - admantine

Streak - Colorkess

Habit - Hour glass structure

Hardness - 10

Cleavage- octaheadral

Composition- pure carbon

Specific gravity-3.5

Dolomite (CaMg(CO3)2

Color - Colorless or white

Hardness is between 3-4

Reacts with any acid

Gneiss

Light and dark strip or banding present alternatively

biotite , pyroxene have Mafic mineral shows dark banding

Quartz, Feldspar have  Felsic mineral for light banding

High grade metmorphic rock which is formed due to regional metamorphism of lower grade rock

Chalk(CaCO3)

Color-White

Very fragile

Hardness-1

With acid gives effervescence.

Analysis of composition and identification based on their identification characteristics are:

1. Diamond

  • Diamond is harder than a streak plate, colourless
  • Adamantine, is a nonmetallic mineral.
  • Transparent, translucent, opaque.

2. Dolomite (carbonate)

  • Vitreous, pearly,
  • Transparent to translucent,
  • Perfect, rhombohedral, three directions.

3. Chalk (CaCO3)

  • White,
  • Very fragile,
  • Acid gives effervescence.

4. Gneiss

  • Light and dark strip or banding present alternatively,
  • biotite, pyroxene have Mafic mineral shows dark banding
  • Quartz, Feldspar have  Felsic mineral for light banding

Thus, these are the identification characteristics of diamond, dolomite, gneiss, and chalk.

To learn more about the characteristics of carbon compounds click here:

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