OPAL

Miscellaneous

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

Notes

(Richard Willis)

Mineral, of the complex form SiO₂ nH₂O
A soft semi-precious stone in that it fluxes easily for glazing, using it in place of quartz (will fuse at lower temperatures than quartz). Comes in many varieties of textures, tones and colors: noble opal, fire opal, white opal, common opal, woody (ligneous) opal [“xiopal”], prasopal, hydrophane, hyalite, spongy opal, jasopal, cacholong, and so forth.

Authors

Richard Willis (Owner)

Pictures

Opal Blue
Opal Blue Green
Opal Rock
Opal Stones

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="OPAL" descrip="" generic="0" rawmineral="1" searchkey="" loi="0.00">
<notes>
<note>Mineral, of the complex form SiO2 nH2O
A soft semi-precious stone in that it fluxes easily for glazing, using it in place of quartz (will fuse at lower temperatures than quartz). Comes in many varieties of textures, tones and colors: noble opal, fire opal, white opal, common opal, woody (ligneous) opal [&#147;xiopal&#148;], prasopal, hydrophane, hyalite, spongy opal, jasopal, cacholong, and so forth.

</note>
</notes>
<pictures>
<picture description="Opal Blue" filename="opal_blue.jpg"/>
<picture description="Opal Blue Green" filename="opal_blue_green.jpg"/>
<picture description="Opal Rock" filename="opal_rock.jpg"/>
<picture description="Opal Stones" filename="opal_stones.jpg"/>
</pictures>
</material>

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