Pierre de Jaumont

The stone of Jaumont is a type of stone S used in the construction of many buildings. It is a stone of Calcaire Oolithique (spheres of 1mm of diameter) of the Jurassic superior (- 154 to -135 million years).

Exploitation

The stone of Jaumont is exploited in the Moselle with the top of old unused mines of Fer: with Malancourt-the-Mountain, Mons-the-Mountain, Roncourt and Saint-Privat-the-Mountain. The careers are located at about fifteen kilometer of Metz.

Coloring

The Oxide iron present in the mines, gives to the stone of Jaumont its yellow color of gold , which in addition with given the word Latin Jaumont in Galbinus Mons (the yellow mountain). Usually this color is defined by yellowish ochreous . This stone does not resist the Atmospheric pollution, with the result that it blackens and thus restorations are necessary.

Characteristics

N° of identification: 7,5
Density apparent: 2.170 kg/m^3.
Porosity: 24,8%
Coefficient absorption of water: 0,16
Compressive strength: 5,71 Mpa.
Propagation velocity of the sound: 3.080 m/s.
Resistance to the fasteners: 4 cm 1.361 NR/5 cm 1.969 NR

Constructions

Many buildings, in particular in Lorraine use this stone:

the Saint-Etienne Cathedral of Metz;
the Law courts of Metz;
the Door of the Germans;
the Theater of Metz.

But also in Champagne-Ardenne:

the Ducal Place with Charleville-Mézières.

See too

the Pierre d' Euville.

External bonds

http://www.pierre-de-jaumont.fr/
Details of the restoration of the cathedral of Metz
stone in the rural architecture in Lorraine, Jacques Guillaume

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