Ironstone

Description

The brown and blue vein ironstone block available from the historic quarry at Great Tew is without comparison.  A unique British supply, dating back several hundred years, of large dimensional block offers unlimited opportunity to the masonry and volume processor with consented reserves of over 15 years supply.  Indeed, some of the block now being quarried is over 30 tonnes and require splitting several times in situ with our multi-mast Marini drill rig.

Technically, the stone is known in geological terms as the Marlstone Rock Bed and comprises much of the Middle Lias strata sandwiched between the Upper and Lower Lias clays of the Jurassic age. 

The Marlstone Rock Bed is about 7-8 meters think with the best block stone recovered from the upper 6 meters of strata in two to three seperate beds.

Examples of work undertaken in ironstone are numerous and diverse – indeed across the country, if the stone work is ironstone it is safe to assume that the raw material came from Great Tew.  For further information about Great Tew ironstone or to discuss your particular project requirements please contact us.

PLEASE NOTE: The stone image on this page is only as accurate as the screen/print out device allows. It is strongly recommended that you request a sample of the stone to check colour and texture prior to ordering.

Physical Performance of Ironstone

Apparent density
1946 Kgm -3 BSEN 1936:2006
Breaking load at dowel hole
2060 N BSEN 13364:2002
Colour
Orange-brown with dark brown/cream
Compressive Strength
20.15 MPa BSEN 1926:2006
Flexural strength
3.98MPa BSEN 12372
Maximum size
0.5m3 - 4m3
Open porosity
35.16% BSEN 1936:2008
Petrographic description
Ferruginous Limestone
Post freeze/thaw (48 cycles)
19.59 MPa BSEN 1926:2006
Texture
Medium to course grained
Water apsorption
15.03% BSEN 13755:2008

PLEASE NOTE: This data should only be used as an indication of the future performance of the stone. Test results may not be representative of the whole quarry. The information given is for guidance only and is subject to alteration without notice. We recommend that customers contact the quarry to ensure that the details are currently valid. Stone being a natural product may vary significantly in colour and texture within the same range of stone. It is strongly recommended that you request a sample of the stone to check colour and texture prior to ordering.

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