TERRIUM — A mineralogy cabinet

Estibina

Estibina is a mineral with formula Sb₂S₃, in the Sulfuros group. This specimen comes from Maramureș, Transilvania, Rumanía and joined the Terrium collection in 1970.

Estibina from Maramureș, Transilvania, Rumanía — Terrium

Description

A historic, lightweight piece of intergrown stibnite bundles with a steely tone and matte-grayish luster.

History of this specimen

Under the loupe, my suspicion was confirmed: this piece was likely smuggled out of the mine inside a food can filled with talcum powder—a trick miners used to protect specimens and earn extra income. It still retains visible talc residue. The original mid-20th-century label calls it "antimonite" and places it in the correct country but an unlocatable area, likely due to a poor transcription of an older handwritten label in a foreign language.

About Estibina

Stibnite (Sb₂S₃) directly bridges ancient archaeology with classic mineralogy: the same antimony sulfide ground in Egypt for medicinal kohl—which later inspired the Latin stibium and the chemical symbol Sb—found its most iconic European locality in Maramureș, Romania. Since the 18th century, this region set the benchmark for the species' acicular habit, supplying natural history collections with specimens instantly recognizable by their steel-grey, spear-like prisms and sharp metallic luster with a bluish tarnish. The significance of these classics also lies in a physical paradox: their fierce, blade-like appearance completely conceals a highly fragile structure governed by a low hardness (Mohs 2) and perfect cleavage.

About the locality

Baia Mare ("Great Mine"), in Maramureș (Romania), is a classic mining district renowned for producing, particularly from the 1940s to the 1980s, some of the world's finest radiating stibnite aggregates. The value of this sulfide sparked a unique tradition in local mining culture: due to the extreme fragility of the crystals, workers smuggled them out for extra income inside empty food tins packed with grease or talcum powder (as in this case).

Technical data

Catalogue No.
0647
Composition
Sb₂S₃
Name
Estibina
Group
Sulfuros
Category
Meritum Persé
Province
Maramureș
Region
Transilvania
Country
Rumanía
Size (cm)
6.5 x 4.5 x 1.8
Weight
36.7 g
Acquired
1970
Ex-collection
Desc. SXX Española
Etymology
The name stibnite spans over two millennia. In classical Greece, it was known as stibi or platyophthalmos ("bright-eyed") due to its cosmetic use. The Romans adapted it to stibium, the source of the chemical symbol Sb. Later terms, like antimonite (linked to an apocryphal "monk-killing" tale) and stibine, reflect how different eras sought to understand this mineral.
Quality
Muy buena
Value trend
Estable

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