Non-crystaline Minerals

Obsidian

Sometimes the magna expelled from a volcano cools so quickly that crystals are not able to form. If the magna is rich in silica it forms a type of glass called obsidian.

Chemically, obsidian is very similar to the igneous rocks, granite and rhyolite. If the magna cools slowly, deep within the Earth, it forms large crystals of granite. If it cools more quickly, near or on the Earth's surface, it forms smaller crystals of rhyolite.

 

Tektites

Tektites are lumps of glass, usually small, which are associated with meteorite impacts. They may be shaped like tears, rods, disks, buttons or dumb-bells. They may be black, brown or green.

Tektites may be either the remains of meteorites or they may be formed when meteorites hit the Earth. The collision causes molten rock to be ejected into the air. The molten rock cools quickly to form small glass beads.

Tektite

 


 

Non-crystaline specimens now available (at eBay):

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One (1) Extra Small Tumbled Obsidian Apache Tears Healing Stone of Protection

AU $2.08
End Date: Friday Jan-11-2019 0:36:33 EST
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One (1) Tumbled Medium Mahogany Obsidian Freedom Limitations Crystal Healing

AU $3.12
End Date: Friday Jan-11-2019 0:36:33 EST
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One (1) Small Tumbled Obsidian Apache Tears-Healing Stone of Protection Card

AU $3.12
End Date: Friday Jan-11-2019 0:36:32 EST
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One (1) Tumbled Blue Obsidian Stone of Protection Metaphysical Card

AU $5.20
End Date: Friday Jan-11-2019 0:36:28 EST
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One (1) Tumbled Yellow Obsidian Stone of Protection Metaphysical Card

AU $5.20
End Date: Friday Jan-11-2019 0:36:26 EST
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One (1) Black Obsidian Point Obelisk Wand 181111-(57-60)mm Natural Crystal

AU $10.40
End Date: Friday Jan-11-2019 0:36:12 EST
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Mahogany Obsidian Obelisk 170801 61.2mm Freedom From Limitations Metaphysical

AU $11.44
End Date: Monday Jan-7-2019 21:57:22 EST
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