Celadonite
A variety of Minerals
What is Celadonite?
Celadonite is a mica group mineral, a phyllosilicate of potassium, iron in both oxidation states, aluminium and hydroxide with formula K(Mg,Fe)(Fe,Al)Si4O102. It crystallizes in the monoclinic system and usually forms massive aggregates of prismatic crystallites or in dull clay masses. It is soft with a Mohs hardness of 2 and a specific gravity of 3. Typically occurs as dull gray-green to bluish green masses. It forms vesicle fillings and linings in altered basaltic lavas. It was first described in 1847 on Monte Baldo, near Verona, Italy. The name is from the French celadon, for sea-green. It is one of two minerals, along with glauconite, used in making the pigment known as green earth. Common impurities are manganese, calcium and sodium (previously known as natrium).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Celadonite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Celadonite Localities Map
See where Celadonite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Blue-green, olive green, apple green
- Hardness (Mohs)
- 2
- Density
- 3 g/cm³
Chemical Properties
- Chemical Formula
- K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
- Elements
- Fe, H, K, Mg, O, Si
Also Known As
Identify Celadonite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Celadonite FAQs
How do I identify Celadonite?
Celadonite can be identified by its hardness of 2 on the Mohs scale, Blue-green color. Look for these key characteristics when examining specimens.
What color is Celadonite?
Celadonite typically appears in Blue-green, olive green, apple green. Color can vary depending on impurities and formation conditions.
How hard is Celadonite?
Celadonite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
%252FAbenakiite-(ce)-01.jpg&size=small)
