Tremolite

Tremolite specimens for sale

4 for sale ยท $200โ€“$1,100 USD

49 in the gallery

Tremolite is an amphibole mineral that forms in elongated, prismatic to fibrous crystals. It commonly displays a white to pale green color and a vitreous to silky lustre, with a hornblende-like appearance in many specimens. Its habit often includes prismatic crystals or fibrous masses that can form in low-temperature hydrothermal veins and metamorphic rocks, producing pieces that are both delicate and striking to examine. Notable specimens come from diverse settings, including classic finds in the USA and Afghanistan, as well as other mineral-rich regions around the world, where Tremolite can occur alongside other metamorphic minerals. Collectors value Tremolite for its clarity in certain schist and marble hosts, its association with talc and actinolite, and the range of green to colorless variants that sometimes show pleasing zoning or translucent to opaque sections.

Formula
โ—ปCa2Mg5(Si8O22)(OH)2
Rarity
Abundant
Stability
Stable
Collector interest
Moderate Interest
Classification notes
Silicates; Inosilicates (single chain); Amphibole group

Key characteristics

Crystal system
monoclinic
Mohs hardness
5โ€“6
Specific gravity
2.99โ€“3.03
Luster
vitreous, silky, pearly
Transparency
transparent, translucent
Color
colorless, white, gray, green
Streak
white
Cleavage
perfect
Fracture
uneven, splintery
Crystal habit
prismatic, bladed, acicular, fibrous, radiating, granular, massive
  • Gem mineral
  • Classic / historic

Buy Tremolite specimens

View all 4

Where Tremolite is found

Top localities

  1. Merelani Hills16 specimens
  2. St. Lawrence County3 specimens
  3. Anosy1 specimen
  4. Balmat1 specimen
  5. Brumado1 specimen
  6. Khanty-Mansi Autonomous Okrug1 specimen
  7. Mpwapwa District1 specimen
  8. Redwing Quarry1 specimen

About Tremolite

For collectors, Tremolite offers a blend of aesthetic appeal and mineralogical interest. The mineral can form clearly elongated crystals or fibrous aggregates that reveal attractive light interaction under proper lighting. Specimens that exhibit clean crystal form, relatively sizable dimensions, or attractive green hues are sought after for crystal cabinets and educational displays. While not as famous as some other amphiboles, Tremolite's presence in classic metamorphic assemblages and its occasional gemmy green variants make it a worthwhile addition to a focused collection.