Comparison · Minerals vs Silicate Minerals
Albite vs Microcline
Albite and Microcline are easy to confuse. Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Albite and Microcline
- Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Hold a thin edge to the light: Albite is Transparent to translucent, Microcline is translucent.
- They overlap in gray and green, but Albite also comes in clear and blue and Microcline also comes in white and pink.
- Well-formed crystals give it away: Albite is Triclinic, Microcline is triclinic.
Albite vs Microcline properties
| Property | Albite | Microcline |
|---|---|---|
| Type | Minerals | Silicate Minerals |
| Mohs hardness | 6–6.5 | 6 |
| Luster | Vitreous, pearly on cleavage | vitreous |
| Streak | White | White |
| Transparency | Transparent to translucent | translucent |
| Specific gravity | 2.60–2.65 | 2.56 |
| Crystal system | Triclinic | triclinic |
| Common colors | White, Colorless, Gray, Greenish, Pale blue (rare) | White, Cream, Pink, Green, Gray |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $5–$300+ |
Which is more valuable?
Microcline is usually the more valuable of the two: a typical collector specimen runs about $40 against $20 for Albite, and premium Microcline can reach $300 or more.
About Albite
Albite is the sodium-rich end-member of the plagioclase feldspar series, with the formula NaAlSi3O8, forming a continuous solid-solution series with the calcium end-member anorthite. It typically appears as white, cream, or pale gray tabular crystals with two cleavage directions meeting near a right angle. Its low density and glassy luster set it apart from denser silicates, and it is a defining component of many granites, gneisses, and pegmatites.
About Microcline
Microcline is a potassium-rich feldspar and a rock-forming mineral in granites and pegmatites. Its blue-green gem variety, amazonite, is widely collected, while ordinary microcline appears as cream, pink, or gray crystals and masses.
Albite vs Microcline FAQ
Is Albite the same as Microcline?
No. Albite is a mineral while Microcline is a silicate mineral. Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Albite from Microcline?
Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Hold a thin edge to the light: Albite is Transparent to translucent, Microcline is translucent. They overlap in gray and green, but Albite also comes in clear and blue and Microcline also comes in white and pink.
Which is harder, Albite or Microcline?
They are about equally hard, both near Mohs 6–6.5.
Which is more valuable, Albite or Microcline?
Microcline is usually the more valuable of the two: a typical collector specimen runs about $40 against $20 for Albite, and premium Microcline can reach $300 or more.
