Taseqite
A variety of Minerals
What is Taseqite?
Taseqite is a rare mineral of the eudialyte group, with formula Na12Sr3Ca6Fe3Zr3NbSiO(Si9O27)2(Si3O9)2(O,OH,H2O)3Cl2. The formula given is derived from the original one and shows a separate silicon at the M4 site, basing on the nomenclature of the eudialyte group. Taseqite, khomyakovite and manganokhomyakovite are three group representatives with species-defining strontium, although many other members display strontium diadochy. Both strontium (Sr) and niobium (Nb) are essential in the crystal structure of taseqite. When compared to khomyakovite, taseqite differs in niobium- and chlorine-dominance.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Taseqite 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.
Taseqite Localities Map
See where Taseqite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Taseqite
Taseqite's type locality is the Taseq slope located in the Ilimaussaq complex, Greenland - hence its name. At the type locality taseqite occurs in albitite veins, together with aegirine, analcime, catapleiite, ferrobustamite, hemimorphite, pectolite (silicates); ancylite-(La), calcite, dolomite, strontianite (carbonates); fluorapatite, and sphalerite. Taseqite was found also in Odichincha massif in association with nepheline, alkaline feldspar, aegerine and lamprophyllite.
Quick Facts
Physical Properties
- Color
- dark brown to yellowish brown, lemon yellow
- Hardness (Mohs)
- 5.5
- Density
- 3.24 g/cm³
- Streak
- brownish white
Chemical Properties
- Chemical Formula
- Na12Sr3Ca6Fe3Zr3Nb[(Si3O9)2(Si9O27)2SiO]Cl2(O,OH,H2O)3
- Elements
- Ca, Cl, Fe, H, Na, Nb, O, Si, Sr, Zr
Identify Taseqite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Taseqite FAQs
How do I identify Taseqite?
Taseqite can be identified by its hardness of 5.5 on the Mohs scale, dark brown to yellowish brown color. Look for these key characteristics when examining specimens.
What color is Taseqite?
Taseqite typically appears in dark brown to yellowish brown, lemon yellow. Color can vary depending on impurities and formation conditions.
How hard is Taseqite?
Taseqite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.
What is the formation of taseqite of Taseqite?
Taseqite's type locality is the Taseq slope located in the Ilimaussaq complex, Greenland - hence its name. At the type locality taseqite occurs in albitite veins, together with aegirine, analcime, catapleiite, ferrobustamite, hemimorphite, pectolite (silicates); ancylite-(La), calcite, dolomite, strontianite (carbonates); fluorapatite, and sphalerite. Taseqite was found also in Odichincha massif in association with nepheline, alkaline feldspar, aegerine and lamprophyllite.
%252FAbenakiite-(ce)-01.jpg&size=small)
