Serandite
Sérandite is named after J.M. Sérand, mineral collector of West Africa who helped in the collection of the mineral on the island of Rouma, Los Archipelago, Guinea.
Sérandite forms transparent rose-red, orange or salmon-pink elongated prismatic crystals.
Sérandite is faceted into exceptionally beautiful gems.
Sérandite forms transparent rose-red, orange or salmon-pink elongated prismatic crystals.
Sérandite is faceted into exceptionally beautiful gems.
| General Information | ||||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Serandite | ||||||||||||||||||
| Mohs Hardness | 5 to 5.5, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Specific Gravity | 3.52, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Tenacity | Brittle, Handbook of mineralogy (2001) | |||||||||||||||||
| Cleavage Quality | Perfect, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Fracture | Uneven, Handbook of mineralogy (2001) | |||||||||||||||||
| Optical Properties of Serandite | ||||||||||||||||||
| Refractive Index | 1.672 to 1.708, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Optical Character | Biaxial/+, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Birefringence | 0.036, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Dispersion | Moderate, Handbook of mineralogy (2001) | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Pink-orange, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Lustre | Vitreous,Silky,Greasy,Dull (Earthy), Handbook of mineralogy (2001) Vitreous to greasy; fibrous aggregates are dull to silky. | |||||||||||||||||
| Crystallography of Serandite | ||||||||||||||||||
| Crystal System | Triclinic, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Habit | Elongated prismatic, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Geological Environment | ||||||||||||||||||
| Where found: | Sérandite occurs in pegmatites cutting syenites and nepheline syenites in an intrusive alkalic gabbro-syenite complex., Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Serandite information at mindat.org | |||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||
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