Comparison · Minerals
Aragonite vs Chabazite
Aragonite and Chabazite are easy to confuse because both are minerals. Both sit near Mohs 3.5–4, 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 Aragonite and Chabazite
- Both sit near Mohs 3.5–4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Aragonite feels noticeably heavier for its size (specific gravity 2.93–2.95 versus 2.05–2.15 for Chabazite).
- They overlap in clear, yellow, and pink, but Aragonite also comes in gray and blue and Chabazite also comes in red.
- Well-formed crystals give it away: Aragonite is Orthorhombic, Chabazite is Trigonal.
Aragonite vs Chabazite properties
| Property | Aragonite | Chabazite |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 3.5–4 | 4–5 |
| Luster | Vitreous to resinous | Vitreous |
| Streak | White | White |
| Transparency | Transparent to translucent | Transparent to translucent |
| Specific gravity | 2.93–2.95 | 2.05–2.15 |
| Crystal system | Orthorhombic | Trigonal |
| Common colors | Colorless, White, Yellow, Gray, Blue, Pink | White, Colorless, Pink, Red, Yellow |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $2–$150+ |
Which is more valuable?
Typical specimens of Aragonite and Chabazite trade in a similar range, around $20.
About Aragonite
Aragonite is calcium carbonate, CaCO3, crystallizing in the orthorhombic system as a metastable polymorph of the more common mineral calcite. It readily forms in low-temperature settings such as caves, hot springs, and the shells of many marine organisms, and it slowly converts to calcite over geologic time. Twinned crystal clusters resembling six-rayed stars are among its most recognizable forms.
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.
Aragonite vs Chabazite FAQ
Is Aragonite the same as Chabazite?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Both sit near Mohs 3.5–4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Aragonite from Chabazite?
Both sit near Mohs 3.5–4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Aragonite feels noticeably heavier for its size (specific gravity 2.93–2.95 versus 2.05–2.15 for Chabazite). They overlap in clear, yellow, and pink, but Aragonite also comes in gray and blue and Chabazite also comes in red.
Which is harder, Aragonite or Chabazite?
Chabazite is harder: Mohs 4–5 against Mohs 3.5–4 for Aragonite.
Which is more valuable, Aragonite or Chabazite?
Typical specimens of Aragonite and Chabazite trade in a similar range, around $20.
