Comparison · Minerals
Apophyllite vs Chabazite
Apophyllite and Chabazite are easy to confuse because both are minerals. Both sit near Mohs 4.5–5, 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 Apophyllite and Chabazite
- Both sit near Mohs 4.5–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- They overlap in clear, pink, and yellow, but Apophyllite also comes in green and Chabazite also comes in red.
- Well-formed crystals give it away: Apophyllite is Tetragonal, Chabazite is Trigonal.
Apophyllite vs Chabazite properties
| Property | Apophyllite | Chabazite |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 4.5–5 | 4–5 |
| Luster | Vitreous, pearly on cleavage | Vitreous |
| Streak | White | White |
| Transparency | Transparent to translucent | Transparent to translucent |
| Specific gravity | 2.3–2.4 | 2.05–2.15 |
| Crystal system | Tetragonal | Trigonal |
| Common colors | Colorless, White, Green, Pink, Pale yellow | White, Colorless, Pink, Red, Yellow |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $2–$150+ |
Which is more valuable?
Typical specimens of Apophyllite and Chabazite trade in a similar range, around $20.
About Apophyllite
Apophyllite is the common name for a small group of hydrated potassium calcium silicates, most often KCa4Si8O20(F,OH)·8H2O, crystallizing in the tetragonal system. It typically grows as glassy, pseudo-cubic or pyramidal crystals lining cavities in basaltic lava. The name comes from the Greek for 'to leaf away,' describing how the mineral flakes when heated, losing its water of crystallization.
About Chabazite
Chabazite is a calcium-bearing zeolite mineral with the general formula (Ca,Na2,K2)Al2Si4O12·6H2O, known for its distinctive pseudo-cubic rhombohedral crystals that superficially resemble cubes. It forms in cavities within basaltic and volcanic rocks where hot, mineral-rich fluids circulate after the host lava cools, placing it among the classic zeolite minerals collected from vesicles in ancient lava flows. Its open, cage-like aluminosilicate framework allows it to absorb and exchange ions, a property shared with other zeolites and exploited in some industrial applications.
Apophyllite vs Chabazite FAQ
Is Apophyllite the same as Chabazite?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Both sit near Mohs 4.5–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Apophyllite from Chabazite?
Both sit near Mohs 4.5–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. They overlap in clear, pink, and yellow, but Apophyllite also comes in green and Chabazite also comes in red. Well-formed crystals give it away: Apophyllite is Tetragonal, Chabazite is Trigonal.
Which is harder, Apophyllite or Chabazite?
They are about equally hard, both near Mohs 4.5–5.
Which is more valuable, Apophyllite or Chabazite?
Typical specimens of Apophyllite and Chabazite trade in a similar range, around $20.
