Hematites Microbotroidal
Hematites is a mineral with formula Fe₂O₃, in the Óxidos group. This specimen comes from La Lastrilla, Tordelrábano, Guadalajara, Castilla-La Mancha, España.
Description
Dark brown botryoidal hematite with smooth surfaces and greasy to metallic lustre, forming aggregates in a calcite geode.
About Hematites
Hematite crystals in a calcite geode formed within the reddish sandstones of the Buntsandstein.
About the locality
The Tordelrábano outcrop (Guadalajara), discovered in the 1980s, yielded some of the finest acicular "tapestries" of goethite and hematite in Iberian mineralogy. These geodes formed in carbonate nodules of the Lower Triassic. The constant comings and goings of collectors and onlookers eventually annoyed the neighbours, who finally fenced off the area.
Technical data
- Catalogue No.
- 0625
- Internal reference
- X0335
- Composition
- Fe₂O₃
- Name
- Hematites
- Variety
- Microbotroidal
- Group
- Óxidos
- Category
- Cupidium
- Mine
- La Lastrilla
- District / Municipality
- Tordelrábano
- Province
- Guadalajara
- Region
- Castilla-La Mancha
- Country
- España
- Etymology
- From the Greek «haima», “blood”, for the red colour of its streak.
- Quality
- Muy buena
- Value trend
- Al alza
Related specimens
- Abellaíta — España
- Abernathyita — España
- Abernathyita — España
- Abernathyita — España
- Aerenita — España
- Aerinita (fibrosa) — España
- Analcima — España
- Analcima — España