Ferrierite-k
Ferrierite-K
A variety of Ferrierite Group
What is Ferrierite-k?
The ferrierite group of zeolite minerals (the FER structure) consists of three very similar species: ferrierite-Mg, ferrierite-Na, and ferrierite-K, based on the dominant cation in the A location. ferrierite-Mg and ferrierite-K are orthorhombic minerals and ferrierite-Na is monoclinic with highly variable cationic composition (Na,K)2Mg(Si,Al)18O36(OH)·9H2O. Calcium and other ions are often also present. They are found in vitreous to pearly, often radiating, spherical aggregates of thin blade-shaped transparent to translucent crystals. Ferrierite typically occurs as an alteration mineral in basaltic rocks and in tuffaceous sediments. In North America, it is found at Kamloops Lake, BC, Canada (the original type locality) and Leavitt Lake, California. Ferrierite was named for Canadian geologist and mining engineer Walter Frederick Ferrier (1865–1950).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ferrierite-k 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.
Ferrierite-k Localities Map
See where Ferrierite-k is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Hardness (Mohs)
- 3 - 3.5
- Streak
- White
Chemical Properties
- Chemical Formula
- (K2,Na2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
- Elements
- Al, Ca, H, K, Mg, Na, O, Si
Identify Ferrierite-k Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Ferrierite-k FAQs
How do I identify Ferrierite-k?
Ferrierite-k can be identified by its hardness of 3 - 3.5 on the Mohs scale. Look for these key characteristics when examining specimens.
How hard is Ferrierite-k?
Ferrierite-k has a hardness of 3 - 3.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.