magnesiotaaffeite-2N'2S
Sign in to saveAlso known as taaffeite
Taaffeite (; BeMgAl4O8) is a mineral, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler's shop in Dublin, Ireland. As such, it is the only gemstone to have been initially identified from a faceted stone. Taaffeite is a million times rarer than diamonds and comes in shades of purple, pink, red. Most pieces of the gem, prior to Taaffe, had been misidentified as spinel. For many years afterwards, it was known only in a few samples, and it is still one of the rarest gemstone minerals in the world.
Key facts
- Mineral.boxbgcolor
- 7e5c77
- Mineral.boxtextcolor
- fff
- Mineral.name
- Taaffeite
- Mineral.category
- Oxide minerals
- Mineral.image
- Magnesiotaaffeite-2N2S-53105.jpg
- Mineral.caption
- Magnesiotaaffeite-2N’2S (Mg3Al8BeO16)
- Mineral.formula
- BeMgAl4O8
- Mineral.IMAsymbol
- Tf
- Mineral.strunz
- 4.FC.25
- Mineral.system
- Hexagonal
- Mineral.class
- Dihexagonal pyramidal (6mm) Trigonal dipyramidal (m) (magnesiotaaffeite-6N'3S and ferrotaaffeite-6N'3S)
- Mineral.color
- Colorless, greyish violet, violet red, red, greenish, light green, pink violet, mauve
- Mineral.habit
- Prismatic, alluvial grains
- Mineral.twinning
- By reflection on (0001)?
- Mineral.cleavage
- Imperfect/fair/absent
- Mineral.fracture
- Conchoidal
- Mineral.mohs
- 8–8.5
- Mineral.luster
- Vitreous
via Wikipedia infobox
Wikidata facts
- Named after
- magnesium
- Image
- Magnesiotaaffeite-2N2S-53105.jpg
Show 10 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.FC.25
- chemical formula
- Mg₃BeAl₈O₁₆
- Nickel-Strunz 9th edition (updated 2009)
- 4.FC.25
- Commons category
- Magnesiotaaffeite-2N2S
- IMA Mineral Symbol
- Mtf-2N'2S
- crystal system
- hexagonal crystal system
- Mohs' hardness
- 8
- streak color
- white
- density
- 3.605
- color
- green
Sources (1)
via Wikidata · CC0
~2 min read
Encyclopedic overview
6 sectionsContents
- Discovery
- Properties
- Usage
- Formation and occurrence
- See also
- References
Taaffeite (; BeMgAl4O8) is a mineral, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler's shop in Dublin, Ireland. As such, it is the only gemstone to have been initially identified from a faceted stone. Taaffeite is a million times rarer than diamonds and comes in shades of purple, pink, red. Most pieces of the gem, prior to Taaffe, had been misidentified as spinel. For many years afterwards, it was known only in a few samples, and it is still one of the rarest gemstone minerals in the world.
Since 2002, the International Mineralogical Association-approved name for taaffeite as a mineral is '''magnesiotaaffeite-2N'2S'.
Excerpted from Wikipedia’s “magnesiotaaffeite-2N'2S” article, available under the CC BY-SA 4.0 licence.