Analcime

Analcime specimens for sale

28 for sale · $25–$7,500 USD

219 in the gallery

Analcime is a zeolite mineral with the formula Na(AlSi2O6)·H2O. It typically forms colorless to white crystals that can be transparent to translucent, often displaying a glassy to pearly lustre. Common crystal habits include trapezohedra and pseudo-cubic forms, sometimes as aggregates or as zeolite-rich crystal matrices. Notable specimens have been reported from several classic locales, including in the United States, Italy, and Iran, where well-formed crystals and large aggregates attract attention from mineral collectors.

Formula
Na(AlSi2O6) · H2O
Rarity
Common
Stability
Stable
Collector interest
Moderate Interest
Classification notes
Zeolite, tectosilicate (framework aluminosilicate)

Key characteristics

Crystal system
isometric
Mohs hardness
5–5.5
Specific gravity
2.22–2.29
Luster
vitreous
Transparency
transparent, translucent
Color
colorless, white, gray, yellow, green, pink
Streak
white
Cleavage
poor
Fracture
subconchoidal, uneven
Crystal habit
equant, granular, massive
  • Gem mineral

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Where Analcime is found

Top localities

  1. Poudrette Quarry30 specimens
  2. Phoenix mine16 specimens
  3. Mont Saint-Hilaire11 specimens
  4. Phoenix Mine11 specimens
  5. Junnila mine, Santa Rita Peak8 specimens
  6. Fengjiashan Mine6 specimens
  7. Skookumchuck Dam4 specimens
  8. Copper Falls Mine3 specimens
  9. Quincy Mine3 specimens
  10. Gold Creek3 specimens

About Analcime

Collectors value analcime for its crisp, geometric shapes and its ability to form clear, well-terminated crystals that can be isolated or part of shimmering zeolite matrices. The mineral often occurs in cavities within volcanic rocks and is commonly associated with other zeolites and minerals such as natrolite and stilbite. Size, transparency, and luster influence desirability, with clean, undamaged crystals from notable localities standing out in a cabinet of minerals. Its relative abundance and classic formation make analcime a reliable and approachable addition to many collections.