Schorl (Tourmaline Group)
Schorl - Black Tourmaline
Item-No.: 2771b Price: 22.00 EUR
China
Schorl - black tourmaline
Item-No.: 2767 Price: 22.00 EUR
China
Schorl - black tourmaline
Item-No.: 2768a Price: 25.00 EUR
China
Schorl - black tourmaline
Item-No.: 2768c Price: 22.00 EUR
China
Schorl - black tourmaline
Item-No.: 2769a Price: 25.00 EUR
China
Schorl - black tourmaline
Item-No.: 2769b Price: 29.00 EUR
China
Schorl - black tourmaline
Item-No.: 2770a Price: 29.00 EUR
China
Schorl - black tourmaline
Item-No.: 2770b Price: 22.00 EUR
China
Schorl - black tourmaline
Item-No.: 2771c Price: 22.00 EUR
China
Schorl - black tourmaline
Item-No.: 2772 Price: 25.00 EUR
China
Schorl - black tourmaline
Item-No.: 2773a Price: 25.00 EUR
China
Schorl - black tourmaline
Item-No.: 2773b Price: 25.00 EUR
China
Schorl - black tourmaline
Item-No.: 2774a Price: 25.00 EUR
China
Tourmaline
Item-No.: MINS1507 Price: 20.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS1508 Price: 19.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS4777 Price: 22.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5353 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5426 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5441 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5442 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5443 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5444 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5054 Price: 9.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5055 Price: 14.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5033 Price: 9.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5034 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS5035 Price: 15.00 EUR
Bobrůvka, Moravia, Czech Republic
Tourmaline
Item-No.: MINS4776 Price: 45.00 EUR
Smolné Pece, Potůčky, Karlovy Vary Region, Czech Republik
| Synonyms: | Afrisite, Cockle, Iron Tourmaline, Schirl, Shirl, Shorl |
| Classification: | Silicates, Cyclosilicates, Tourmaline Group |
| Chemical formula: | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Crystal system: | Trigonal |
| Density (g/cm3): | 3.18 - 3.22 measured, 3.244 calculated |
| Tenacity: | Brittle |
| Cleavage: | Very poor on vertical C axis |
| Fracture: | Irregular, uneven, Sub-conchoidal |
| Hardness (Mohs): | 7 - 7.5 |
| Colour: | Bluish-black to black, sometimes brownish-black, rarely greenish-black |
| Lustre: | Vitreous, Resinous |
| Streak: | Greyish-white to bluish-white |
| Transparency: | Translucent, opaque |
| Co-type locality: | Zschorlau, Schneeberg, Ore Mountains, Saxony, Germany |