dravite
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dravite — /drah vuyt/, n. a brown variety of magnesium tourmaline. [ < G Dravit. See DRAVA, ITE1] * * * a brown, magnesium rich variety of tourmaline. See tourmaline. * * * … Universalium
dravite — dra·vite … English syllables
dravite — ˈdräˌvīt noun ( s) Etymology: German dravit, from the Drave or Drava river, Austria and Yugoslavia, its locality + German it ite : a magnesium containing tourmaline that is often brown in color * * * /drah vuyt/, n. a brown variety of magnesium… … Useful english dictionary
Tourmaline — Schorl Tourmaline General Category Cyclosilicate Chemical formula (Ca,K,Na,[ … Wikipedia
List of minerals C-E (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… … Wikipedia
Schorl — Catégorie IX : silicates[1] Schorl Général … Wikipédia en Français
tourmaline — tourmalinic /toor meuh lin ik/, adj. /toor meuh lin, leen /, n. any of a group of silicate minerals of complex composition, containing boron, aluminum, etc., usually black but having various colored, transparent varieties used as gems. Also,… … Universalium
Important gemstones — ▪ Table Important gemstones mineral gem name colour Mohs hardness* specific gravity* beryl aquamarine sky blue to greenish blue 7½–8 2.68–2.71 emerald green 2.68–2.74 goshenite colourless; greenish yellow, yellow green, brownish same as… … Universalium
Elbaite — Infobox mineral name = Elbaite category = Silicate mineral |thumb imagesize = caption = formula = Na(LiAl)3Al6Si6O18(BO3)3(OH)4 molweight = color = Green, red to pink, blue, orange, yellow, colorless, multicolored habit = Prismatic; striated… … Wikipedia
Lengenbach Quarry — Lengenbach The Swiss sulfosalt quarry= specimens. These minerals have been highly appreciated in the past and also today, due to various factors: the rarity and the diversity of the mineral species collected, the notable perfection of crystals … Wikipedia
Achroit — Turmalingruppe verschiedene Turmalin Minerale aus Madagaskar Chemische Formel XY3Z6[(BO3)3T6O18(OH,O)3(OH,F,O)] X=(Ca,Na,K,[]), Y=(Mg,Li,Al,Mn,Fe2+,Fe3+,V,Cr,Ti,Cu,[]), Z=(Al,Mg,Cr,V,Fe3+,Ti), T=(Si,Al,B,Be) … Deutsch Wikipedia
