Comparison · Minerals
Chabazite vs Eudialyte
Chabazite and Eudialyte are easy to confuse because both are minerals. Both sit near Mohs 4–5, 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 Chabazite and Eudialyte
- Both sit near Mohs 4–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Eudialyte feels noticeably heavier for its size (specific gravity 2.74–3.1 versus 2.05–2.15 for Chabazite).
- They overlap in pink, red, and yellow, but Chabazite also comes in clear and Eudialyte also comes in brown.
Chabazite vs Eudialyte properties
| Property | Chabazite | Eudialyte |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 4–5 | 5–5.5 |
| Luster | Vitreous | Vitreous to greasy |
| Streak | White | White |
| Transparency | Transparent to translucent | Transparent to translucent |
| Specific gravity | 2.05–2.15 | 2.74–3.1 |
| Crystal system | Trigonal | Trigonal |
| Common colors | White, Colorless, Pink, Red, Yellow | Red, Pink, Brownish-red, Yellow, Brown |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $2–$150+ |
Which is more valuable?
Typical specimens of Chabazite and Eudialyte trade in a similar range, around $20.
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.
About Eudialyte
Eudialyte is a complex, often pink to red zirconium silicate mineral crystallizing in the trigonal system, associated almost exclusively with unusual alkaline igneous rocks called nepheline syenites. Its name derives from Greek words meaning well decomposable, a reference to how readily it dissolves in acid compared to most silicate minerals. Nicknamed Saami blood stone in parts of Scandinavia, eudialyte's vivid coloring and rarity make it a favorite among collectors of unusual silicate minerals.
Chabazite vs Eudialyte FAQ
Is Chabazite the same as Eudialyte?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Both sit near Mohs 4–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Chabazite from Eudialyte?
Both sit near Mohs 4–5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Eudialyte feels noticeably heavier for its size (specific gravity 2.74–3.1 versus 2.05–2.15 for Chabazite). They overlap in pink, red, and yellow, but Chabazite also comes in clear and Eudialyte also comes in brown.
Which is harder, Chabazite or Eudialyte?
Eudialyte is harder: Mohs 5–5.5 against Mohs 4–5 for Chabazite.
Which is more valuable, Chabazite or Eudialyte?
Typical specimens of Chabazite and Eudialyte trade in a similar range, around $20.
