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  2. Tourmaline - Wikipedia

    en.wikipedia.org/wiki/Tourmaline

    Dravite, also called brown tourmaline, is the sodium magnesium rich tourmaline endmember. Uvite, in comparison, is a calcium magnesium tourmaline. ... The 41 minerals ...

  3. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Some minerals made into gemstones may display a chatoyancy or cat's eye effect, these include: [1] ... Dravite; Elbaite; Fluor-liddicoatite; Indicolite; Olenite ...

  4. Elbaite - Wikipedia

    en.wikipedia.org/wiki/Elbaite

    Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li 1.5 Al 1.5)Al 6 Si 6 O 18 (BO 3) 3 (OH) 4, [4] is a mineral species belonging to the six-member ring cyclosilicate tourmaline group. Elbaite forms three series, with dravite, with fluor-liddicoatite, and with schorl.

  5. List of minerals recognized by the International ...

    en.wikipedia.org/wiki/List_of_minerals...

    This list includes those recognised minerals beginning with the letter O.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.

  6. Povondraite - Wikipedia

    en.wikipedia.org/wiki/Povondraite

    Associated minerals include quartz, potassium feldspar, muscovite, schorl, riebeckite and magnesite. [3] Discovered at the San Francisco mine, near Villa Tunari (in Alto Chapare), Bolivia, in 1976, originally it was called ferridravite, for the composition and the assumed relationship to dravite, i.e., "ferric dravite". [4]

  7. List of minerals recognized by the International ...

    en.wikipedia.org/wiki/List_of_minerals...

    This list includes those recognised minerals beginning with the letter D.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.

  8. Wikipedia : WikiProject Rocks and minerals/Worklist

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    Minerals belonging to tectosilicates without zeolitic H 2 O Minerals: ravg txtbk danburite, ravg rckf txtbk petalite. Silica family (Nickel–Strunz 10 ed): rckf txtbk coesite, rckf txtbk cristobalite, none moganite, txtbk opal (cristobalite and/or tridymite and/or amorphous silica), ravg rckf txtbk quartz, rckf txtbk stishovite, rckf txtbk ...

  9. Wikipedia:WikiProject Rocks and minerals/Draft on mineral ...

    en.wikipedia.org/.../Draft_on_mineral_notability

    "Mineral variety", broad sense (V) Mineral series; Mineral subgroup; Mineral group; Rruff.info tags (R) Gemstones: readily available gemstones, unlikely available gemstones, rare gemstones, extremely rare gemstones; Rock-forming minerals; Textbook minerals; Commons.wikimedia.org: ca. number of items; Number of interwikis (Wikis)