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Diatomaceous Earth

Alternate Names: Diatomite

Oxide Weight1917.60
Formula Weight2040.00
If this formula is not unified correctly please contact us.

A marine sediment consisting primarily of the skeletons of diatoms (microscopic free-swimming algae that build their ornate 'silica houses' from SiO2 in sea water).

Deposits are located in California, Kenya, southern British Columbia, and elsewhere where there are uplifted marine sediments. Johns Manville has a large mine in Lompoc, California where ridges of hills expose large amounts of the the white, solid material. These deposits are rich in marine fossils on display at a local museum.

Diatomite, the raw parent material, is fairly soft. Diatomaceous earth is used as a refractory ingredient in bricks etc, as a mild abrasive, as an insulation in boilers and furnaces, and in filtering systems. The material is not not typically pulverized to a fine powder the way flint is.

Out Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Diatomaceous Earth" descrip="" searchkey="Diatomite" loi="0.00" casnumber="7631-86-9"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.000" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="5.000" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="87.000" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.000" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="6.000" tolerance=""/> </volatiles> </material>

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