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Coal outcrops, Utrillas, Teruel, Aragón, Spaini
Regional Level Types
Coal outcropsGroup of Outcrops
AragónAutonomous Community

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Latitude & Longitude (WGS84):
40° 48' 20'' North , 0° 50' 36'' West
Latitude & Longitude (decimal):
Locality type:
Group of Outcrops
Nearest Settlements:
Utrillas3,219 (2012)0.8km
Escucha1,097 (2012)3.0km
Montalbán1,472 (2012)4.6km
Martín del Río472 (2012)6.2km
Palomar de Arroyos218 (2012)8.3km
Name(s) in local language(s):
Afloramientos de carbón, Utrillas, Teruel

Mining area with abundant coal outcrops (lignite). In the natural combustion of coals (pyrometamorphism), clay layers are transformed into a rock, brick-like, consisting mainly of mullite, with varied contents of quartz, cristobalite and hematite.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

1 valid mineral.

Detailed Mineral List:

Reference: Rui Nunes 2018
Formula: Al4+2xSi2-2xO10-x
Reference: -- Calvo, M. (2008): Minerales de Aragón. Prames, Zaragoza. 463 pags.

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Unclassified Minerals, Mixtures, etc.

List of minerals for each chemical element

O MulliteAl4+2xSi2-2xO10-x
Al MulliteAl4+2xSi2-2xO10-x
Si MulliteAl4+2xSi2-2xO10-x


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Calvo, M. (2008): Minerales de Aragón. Prames, Zaragoza. 463 pags.
- López Aguayo, F. y Galán Huertos, E. (1973). Nota sobre la existencia de mullita en Utrillas (Teruel-España). Boletín de la Sociedad Española de Cerámica y Vidrio, 12, 349-350.
- López Aguayo, F., Galán, E. y Martín, J.L. (1974). Occurrence of mullite in the sedimentary Utrillas facies (Utrillas, Spain). Bulletin du Groupe Français des Argiles, 26, 263-275.

Other Regions, Features and Areas containg this locality

Eurasian PlateTectonic Plate

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