Ancylite-(la)
Ancylite-(La)
A variety of Minerals
What is Ancylite-(la)?
Ancylite is a group of hydrous strontium carbonate minerals containing cerium, lanthanum and minor amounts of other rare-earth elements. The composition is Sr(Ce,La)(CO3)2(OH)·H2O with ancylite-Ce enriched in cerium and ancylite-La in lanthanum. Ancylite was first described in 1899 for an occurrence in the Narsarsuk pegmatite in west Greenland and named from the Greek αυκιλος for curved in reference to its rounded or distorted crystal form.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ancylite-(la) 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.
Quick Facts
Physical Properties
- Color
- Colorless, pale yellowish gray, yellowish brown, yellow
- Hardness (Mohs)
- 4 - 4.5
- Rock tumbling
- Not recommended
- Streak
- White
Chemical Properties
- Chemical Formula
- LaSr(CO3)2(OH) · H2O
- Elements
- C, H, La, O, Sr
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Ancylite-(la) FAQs
How do I identify Ancylite-(la)?
Ancylite-(la) can be identified by its hardness of 4 - 4.5 on the Mohs scale, Colorless color. Look for these key characteristics when examining specimens.
What color is Ancylite-(la)?
Ancylite-(la) typically appears in Colorless, pale yellowish gray, yellowish brown, yellow. Color can vary depending on impurities and formation conditions.
How hard is Ancylite-(la)?
Ancylite-(la) has a hardness of 4 - 4.5 on the Mohs scale. This gives it moderate hardness.
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