Tektite
| Refractive Index : 1.54 – 1.46 |
| Optical Characteristic : SR, ADR |
| Specific Gravity : 2.96 – 2.21 |
| Formula : Mostly silica. |
| Crystal System : Non-crystalline |
| Variety/Species : Tektite |
| Species/Group : glass-natural |
| Birefringence : none |
| Dispersion : N/A |
| Hardness : 5.5 to 6.5 |
| Toughness : Fair to good |
| Ultrasonic : Usually safe |
| Steam : risky |
| UV Long : Inert |
| UV Short : Inert |
| Pleochroism : None |
| Strength : N/A |
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| Pleochroism Colors : None |
| Heat : May fracture |
| Acids : Avoid hydrofluoric acid |
| Light : stable |
| Polish Luster : vitreous |
| Fracture : conchoidal |
| Fracture Luster : Vitreous |
| Clarity Type : N/A |
| Tones : N/A |
| Saturations : N/A |
| Cause of Color : Iron |
| Enhancements : none |
| Cleavage : None |
| Color Range : Black, brown, greenish yellow, olive green, green, yellowish green, grayish green, bottle green black with brown edge. |
| Transparency : Transparent to Translucent |
| Phenomena : None |
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| Separations : Tektite from- Obsidian : SG (possibly), appearance, magnification, transparency (possibly) Opal : Appearance, magnification, RI (possibly), SG (possibly) Chalcedony : RI, SG, appearance, magnification, fracture, polariscope reaction (possibly) Manmade glass : Appearance, magnification, RI (possibly), SG (possibly) |
| Identifying Characteristics and information Gas bubbles which are round and elongated, Flow lines, roiled effect.Gas bubbles and flow lines appear in both tektites and man-made glass. Swirl Striae are not like those found in paste (man-made glass used to imitate natural gemstones). |
| Spectral Data not diagnostic. |
| Trade Names and Misnomers Australite Bediasite Billitonite Darwin Glass Fire pearl (M) Georgia Tektite Indochinite Ivory Coast Tektite Javaite Massachusetts Tektite |
Tags: tektite
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