IRISHTOWN SANDSTONE TECHNICAL NOTES 2008
DESCRIPTION

"SANDSTONE" A cemented or otherwise compacted detrital sediment composed predominatly of quartz grains , the size grains of the latter being those of sand. Mineralogical varieties such as feldspathic and glauconitic sandstones are recognised, and also argillaceous, siliceous, calcareous, ferrigineous and other varieties according to the nature of the binding or cementing of material ( AGI )

A sedimentry rock usually consisting of quartz cemented with silica, iron oxide or calcium carbonate

Sandstone is durable, has a high crushing and tensile strength together with a wide range of texture and colours

Donnybrook stone from the Irishtown Quarries have a very high silica content. Our sandstone deposit is consistent in quality, has no cross bedding with an even fine grain texture. Its compressive strength and great durability place it amongst the worlds premium "freestones". This is due to its lack of carbonates as a binder with in its place a secondary silica binder.

Geological Name FELDSPATHIC SANDSTONE
Common Name DONNYBROOK SANDSTONE
Bulk Density ( ASTM C97-83 )....2.4/Tonnes/m3
Absorption by weight ( ASTM C97-83 )....3.5%
Modulus of rupture 12MPa dry....7.5MPa wet
Compressive Strength ( ASTM C170-87 )....70MPa Dry...50MPa wet

CHEMICAL ANALYSIS
Silica-insoluble 86.55
Silica-soluble 1.38
Alumina 5.83
Ferric Oxide 0.32
Ferrous Oxide 0.1
Magnesia 0.76
Lime 0.21
Soda 0.56
Potash 2.58
Water @ 100deg f 0.47
Water on ignition 1.01
carbonic Acid 0.02
Phosphoric Acid 0.17
Titanium Oxide 0.14
Sulphuric Oxide 0.02
Organic matter 0.04
  100.16 Government Analysis - H Bowley
   
APPLICATION

Sandstone from Irishtown can be diamond cut / split to almost any practical size for
the building and landscaping industry.

Main applications for our products are as follows
- STRUCTURAL WALLING INTERIOR AND EXTERIOR
- PAVING INTERIOR / EXTERIOR / POOLS
- LINTELS / ARCHES / STEPS
- SCULPTURE AND MONUMENTAL BLOCKS
- RETAINING WALLS / SOLID VENEER
- LANDSCAPE / GARDEN WALLS
- CLADDING TILES
- FEATURE WORK / ENTRY STATEMENTS
SIZE GUIDE
  TYPE CUT HEIGHT LENGHT WIDTH
*ALL DIMENSIONS IN MILLIMETRES PAVERS DIAMOND 250 500 50
      250 Random 50
      165 500 50
      78 300 50
  WALLING SPLIT DIAMOND   250 500 110 3CS
      250 Random 110 3CS
      165 500 110 3CS
      250 500 110 3CS
  CLAD DIAMOND 250 500 25/20
      250 RANDOM 25/20
      165 500 25/20
      78 300 25/20
SUITS STANDARD 86MM BRICK GUAGE SPLITFACE CLAD ( TO PITCH )   250 500 50
      250 Random 50
      156 500 50
      78 300 50
  GARDEN WALL SPLIT DIAMOND   250 500 180
      250 Random 180
      165 500 180
      78 300 180
CUSTOM ORDERS ON APPLICATION
MONUMENTAL / SCULPTOR BLOCKS TO REQUIRMENTS