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Magnetite

FERROSO-FERRIC OXIDE, FEROSIC OXIDE

Chemistry Fe2O3 66.170 FeO 33.830

Miscellaneous

• Family: Colorant
• Region: None
• Mined At: Unspecified
• Raw Mineral: Yes
• Generic: No

Notes

Magnetic Iron oxide. Iron scale. Iron spangles.

This is a distinct black, hard, dense and stable crystalline mineral form of iron oxide made from magnetite ore. It is not to be confused with brown Fe3O4 mixed ferrous-ferric iron oxide.

Unlike the much softer black and red iron oxide, this material is useful in granular form to introduce specking into bodies and glazes. As a ground powder it has little advantage over other forms of iron. Other materials such as granular manganese, iron pyrites, granular rutile and ilmenite are also useful for speckling purposes.

Fe3O4 can be converted to FeO by reduction where CO robs its oxygen atom or it can be oxidized to Fe2O3.

Note

(Richard Willis)

Mineral, of the ideal form Fe₃O₄ see iron

Data

• Melting Point (MP): 1538C D
• Specific Gravity: 5.18
• Hardness (Moh): 6.5
• Hardness (Moh): 6.5
• Specific Gravity: 5.18
• Melting Point (MP): 1538C D

Suppliers

• Generic
  

Authors

• Tony Hansen (Owner)

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="Magnetite" descrip="FERROSO-FERRIC OXIDE, FEROSIC OXIDE" generic="0" rawmineral="1" searchkey="" loi="0.00">
<families>
<family name="Colorant"/>
</families>
<oxides>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="66.170" tolerance=""/>
<oxide symbol="FeO" name="Ferrous Oxide" status="" percent="33.830" tolerance=""/>
</oxides>
<suppliers>
<supplier name="Generic" country="" url="" label=""/>
</suppliers>
<notes>
<note>Magnetic Iron oxide. Iron scale. Iron spangles.

This is a distinct black, hard, dense and stable crystalline mineral form of iron oxide made from magnetite ore. It is not to be confused with brown Fe3O4 mixed ferrous-ferric iron oxide.

Unlike the much softer black and red iron oxide, this material is useful in granular form to introduce specking into bodies and glazes. As a ground powder it has little advantage over other forms of iron. Other materials such as granular manganese, iron pyrites, granular rutile and ilmenite are also useful for speckling purposes.

Fe3O4 can be converted to FeO by reduction where CO robs its oxygen atom or it can be oxidized to Fe2O3.
</note>
<note>Mineral, of the ideal form Fe&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;O&lt;FONT SIZE=2&gt;&lt;SUB&gt;4&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt; &lt;/SUB&gt;&lt;FONT SIZE=2&gt;see &lt;B&gt;&lt;I&gt;iron&lt;/I&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;BR&gt;

</note>
</notes>
<testdata>
<testitem testname="0" value="1538C D"/>
<testitem testname="0" value="5.18"/>
<testitem testname="0" value="6.5"/>
<testitem testname="0" value="6.5"/>
<testitem testname="0" value="5.18"/>
<testitem testname="0" value="1538C D"/>
</testdata>
</material>

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