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Cream-coloured sandstone with orange-brown veining due to the presence of iron oxide.
The percentage of quartz is greater than 95%, so it can be classified as a medium grain quartzarenite. The rock also includes a different series of additional minerals in smaller ratios, such as muscovite, biotite, plagioclase, chert and opaque minerals.
Grains are cemented by clay and secondary quartz.
Rocks are obtained in large blocks from the Las Cuerdas quarry, in Castrillo de la Reina (Burgos), where there are sedimentary blocks from the early cretaceous period that make up the Weald facies.
In the company workshop in Vilviestre del Pinar (Burgos), the blocks are cut into different sizes with a wide range of surface finishes such as saw cut, bush hammered, pitch-faced, etc.
It is most commonly used for facades, although its tones make it ideal for indoor surfacing.
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Bulk density
(UNE-EN 1936:1999)
2090 kg/m3 |
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Resistance to anchorages
(UNE-EN 13364:2002)
450 N |
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True porosity
(UNE-EN 1936:1999)
20,8% |
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Abrasion resistance
(UNE-EN 1341:2002)
39 mm |
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Friction resistance
(UNE-EN 14231:2004)
79 USRV |
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Flexural strength
(UNE-EN 12372:1999)
2,2 MPa |
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Linear coefficient of thermal expansion
(UNE-EN 14581:2006)
9,96·10-6·C-1 |
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Freeze/thaw resistance (12 cycles)
(UNE-EN 12371:2002)
2,5 MPa
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Capillary suction
(UNE-EN 1925:2006)
93,7•g/(m2*t0,5)
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Compressive strength
(UNE-EN 1926:2007)
26 MPa
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Freeze/thaw resistance (48 cycles)
(UNE-EN 12371:2002)
2,1 MPa
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Water absorption at atmospheric pressure
(UNE-EN 13755:2002)
6,8%
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Ageing resistance due to thermal shock
(UNE-EN 14066:2003)
0,17% (PESO ) 1,9% (Ed)
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| TILES |
| Sizes: |
60x40; 60x30; 80x40 (from thickness = 3 cm.).
100x50 (from thickness = 4 cm.) VARYING SIZES |
| Thicknesses: |
2, 3, 4, 5, 6, 7, 8, 9 y 10 cm. |
| Finishes: |
Saw cut.
Bush hammered (from thickness = 4 cm.).
hand stripped (from thickness = 4 cm.).
Pitched face . |
| ASHLARS |
| Thicknesses: |
from thickness 10 cm. |
| Finishes: |
Saw cut.
Bush hammered.
hand stripped. |
| SLABS |
| Thicknesses: |
3, 4, 5, 6, 7, 8 cm. |
| Finishes: |
Saw cut.
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| SLABS |
| Thicknesses: |
desde 10 cm hasta 100 cm. |
| Finishes: |
Saw cut.
Bush hammered (from thickness = 4 cm.).
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| MASONRY |
| Mixed: |
e= 8 / 12 cm. |
| Split: |
e= 18 / 22 cm. |
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| Bush hammered |
Hand stripped |
Pitch-faced |
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