Negro Fantasia

GEOGRAPHIC LOCALIZATION

PROVINCE	Almería
TOWNSHIP	Macael

MACROSCOPIC DESCRIPTION

Dark grey marble with some calcite veins.

MINERAL COMPOSITION

ESSENTIAL MINERALS	ACCESORY MINERALS
Calcite.	Quartz, opaques, organic remains, Muscovite.

MICROSCOPIC DESCRIPTION

Marble formed by heterometric clacite with clast of quartz.

PHYSICO-MECHANICAL PROPERTIES

BULK SPECIFIC GRAVITY	2,72 g/cm3
APPARENT POROSITY	0,09%
ABSORPTION COEFFICIENT	0,09%
COMPRESSION STRENGTH	630 Kg/cm2
BENDING STRENGTH	143 Kg/cm2
C. STRENGTH AFTER FREEZING TEST	616 Kg/cm2
FRICTIONAL WEAR TEST	5,10 mm
IMPACT TEST	43,75 cm

Negro Marquina

GEOGRAPHIC LOCALIZATION

PROVINCE	Vizcaya
TOWNSHIP	Marquina

MACROSCOPIC DESCRIPTION

Fine grain rock, black colour with some white veins and fossil remains.

MINERAL COMPOSITION

ESSENTIAL MINERALS	ACCESORY MINERALS
98% Calcite	Clay minerals.

MICROSCOPIC DESCRIPTION

Abundant organic material with sparitic veins and fossil remains.

PHYSICO-MECHANICAL PROPERTIES

BULK SPECIFIC GRAVITY	2,69 g/cm3
APPARENT POROSITY	0,47%
ABSORPTION COEFFICIENT	0,17%
COMPRESSION STRENGTH	629 Kg/cm2
BENDING STRENGTH	136 Kg/cm2
C. STRENGTH AFTER FREEZING TEST	595 Kg/cm2
FRICTIONAL WEAR TEST	2,90 mm
IMPACT TEST	30 cm

Negro Pinta

GEOGRAPHIC LOCALIZATION

PROVINCE	Badajoz
TOWNSHIP	Alconera

MACROSCOPIC DESCRIPTION

Recrystallized limestone, fine grain, dark grey-blue colour with irregular whitish-yellow areas.

MINERAL COMPOSITION

ESSENTIAL MINERALS	ACCESORY MINERALS
Calcite.	Opaques.

MICROSCOPIC DESCRIPTION

Recrystallized limestone rock wich erased primary structure.

PHYSICO-MECHANICAL PROPERTIES

BULK SPECIFIC GRAVITY	2,71 g/cm3
APPARENT POROSITY	0,35%
ABSORPTION COEFFICIENT	0,12%
COMPRESSION STRENGTH	903 Kg/cm2
BENDING STRENGTH	174 Kg/cm2
C. STRENGTH AFTER FREEZING TEST	903 Kg/cm2
FRICTIONAL WEAR TEST	2,89 mm
IMPACT TEST	35 cm