Amazonite Vs. Apatite


Amazonite is a gemstone composed of potassium aluminum tectosilicate.[1] Apatite is a popular mineral group and its chemical composition is a group of phosphates.[2]

Images of amazonite

Images of apatite


Quick Facts on Differences of Amazonite and Apatite

For a quick recap of the differences amazonite and apatite:
  • While both amazonite and apatite can be translucent, amazonite can be opaque and apatite can be transparent.
  • In terms of crystallography, amazonite is triclinic while apatite is hexagonal.
  • For chemical formulas, amazonite is KAlSi3O8 while apatite can be Ca5(PO4)3(F, Cl or OH).
  • Amazonite can be commonly green while apatite can be commonly red.
  • Amazonite's rarity is more rare than apatite.
  • Amazonite's hardness is higher than apatite - amazonite ranges from 6 to 6.5 and apatite is 5 on the Moh's scale.

Quick Facts on Similarities of Amazonite and Apatite

The similarities of amazonite and apatite include:
  • In terms of luster, amazonite and apatite both are vitreous.
  • Amazonite and apatite both streak white.

Summary of Amazonite

Amazonite is a mineral that is also known as Amazon stone or Amazon jade. It is a type of feldspar that is typically green in color, although it can also be found in shades of blue or yellow-green. The green color is caused by the presence of lead and copper in the mineral.

Summary of Apatite

Apatite is a mineral that is commonly found in igneous, metamorphic, and sedimentary rocks. It is made up of calcium phosphate, which is the same mineral that makes up our teeth and bones. Apatite can be identified by its green, blue, or yellow color, and its hardness of 5 on the Mohs scale. It can also be identified by its crystal structure, which is hexagonal.

Table Comparison of Amazonite vs Apatite

Amazonite (src) Apatite (src)
Transparency translucent, opaque transparent, translucent
Chemical Formula KAlSi3O8 Ca5(PO4)3(F,Cl,OH)
Chemical Composition potassium aluminum tectosilicate a group of phosphates
Hardness 6, 6.5 5
Streak white white
Crystallography triclinic hexagonal
Hydrous No No
Colors common: green
sometimes: blue
less common: gray, purple, multicolor
common: red
sometimes: blue, gray, pink, brown, green, white, purple, yellow, colorless, multicolor
Fracture conchoidal, uneven conchoidal


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