Tuffeau Limestone
Tuffeau Limestone is a light beige marine sedimentary rock which is found in the Loire Valley of France.
Volumetric weight: 1300-1400 kg / m3 (NF EN 1936)
Porosity: 40-50% (NF EN 1936)Sound propagation speed: 1800 to 2100 m / s (NF B 10-505)
Compressive Strength: 9 to 15 MPa (NF EN 1926)
Capillary C1: 15-25 g.cm-2.mn-0.5 (NF B 10-502)
Capillarity C2: 20-30 g.cm-2.mn-0.5 (NF B 10-502)
Extraction site Anjou-Touraine
Geological position Secondary Era: Late Cretaceous
Turonian stage
Age 90 million years
petrography Quartz
micas
glauconite
opal cristobalite
Clay minerals (smectite, illite, kaolinite)
Heavy minerals (tourmaline, staurolite, andalusite)
physical characteristics
Bulk density 1300-1500 kg / m3
Porosity 40-49%
Speed of sound from 1350 to 2040 m / s
Compressive strength 6-12 N / mm2 (1N / mm2 +/- = 10.2 kg / cm2)
paleontology
Mainly fossil mollusks (bivalves)
Echinoderms (micraster)
bryozoans
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