Entry № 245
Löllingite
FeAs₂
Silvery iron arsenide of the sulfide veins.
Chakra
Root
Element
Earth · Metal
Zodiac
Capricorn · Scorpio
I. The Metaphysical Reading
How the stone has been held.
Löllingite (sometimes written ioellingite) is worked with as a specimen stone of hidden threshold, held to contemplate the boundary between what looks safe and what actually is. It is a collector's mineral, not one for the body.
- Chakra
- Root
- Element
- Earth · Metal
- Zodiac
- Capricorn · Scorpio
- Keynote
- Silvery iron arsenide of the sulfide veins.
II. The Scientific Reading
What the lattice actually does.
Löllingite is an iron arsenide (FeAs₂) that occurs in medium- to high-temperature hydrothermal veins alongside arsenopyrite, cobaltite, and other arsenide-sulfide minerals. It is isostructural with marcasite but with arsenic replacing sulfur. Because it contains around 73 % arsenic by weight and releases arsenic compounds when weathered or heated, löllingite is treated strictly as a locked mineralogical specimen — never tumbled, powdered, worn against skin, or used in water.
- Formula
- FeAs₂
- System
- Orthorhombic
- Hardness
- 5 – 5.5 (Mohs)
- Provenance
- Austria (Lölling — type locality), Germany, Sweden, Canada, USA
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- FeAs₂
- Crystal System
- Orthorhombic
- Mohs Hardness
- 5 – 5.5 (Mohs)
- Density
- 7.4 – 7.5 g/cm³
- Refractive Index
- Opaque; bright metallic lustre
- Provenance
- Austria (Lölling — type locality), Germany, Sweden, Canada, USA
- Color Origin
- Silver-white to steel-grey, tarnishing darker
Related Crystals
Stones that share this lattice
Next in the Atlas
Iowaite
Pale sea-green hydroxide of the serpentinite margins.
