Lot of various items- 650 g - (50)

Varied collection of 50 mineral specimens – Diverse localities & formations – Cataloged Description: Offered is a carefully assembled collection of 50 different minerals, highly suitable for the beginner or advanced collector, educational purposes, or as an addition to an existing collection. This varied lot contains a wide range of colors, crystal structures, and compositions from diverse global localities. Each piece is clearly cataloged in accordance with the accompanying inventory list. Key features: Quantity: 50 unique mineral specimens Variation: Mix of, among others, silicates, carbonates, oxides and crystalline structures Documentation: Fully documented with mineral names, chemical formulas, and origin/localities (where known) Presentation: Highly suitable for display cabinets, study or photography (including UV fluorescence where applicable) Condition: Natural mineral specimens in good to excellent condition, as shown in the photos. View the photos carefully for a full impression of the lot. Although not all photos are perfectly sharp, I can assure you that all objects are in very good (excellent) condition. An Excel sheet is also provided with everything clearly described again: Name, locality (if known) details, chemical composition and notable features. no. Name Mineral / Specimen / Locality / Label details / Notable features & Characteristics 1 Copper / Keweenaw Peninsula, Michigan, USA / Cu (native copper), cubic, reddish-copper hue, heavy metallic luster 2 Ilvaiet / South mtn. Idaho / Fe++Fe+++2O4(BO3), rare iron-boronate mineral, black 3 Red Gypsum / Spain / CaSO4·2H2O, monoclinic, red gypsum due to iron-oxide inclusions 4 Grossular / Val Malenco, Italy / Russia / Ca3Al2(SiO4)3, garnet group, cubic, often green crystals 5 Hematite / Elba, Italy / Cumberland, England / Fe2O3, trigonal, steel-gray to reddish-brown, red streak 6 Selenite / Naica, Chihuahua, Mexico / CaSO4·2H2O, transparent gypsum (selenite), glassy luster 7 Mordenite / Iceland / (Na2,Ca,K2)Al2Si10O24·6H2O, zeolite, white/gray fibrous clusters 8 Garnet / Alpe Adria / Madagascar / Silicate mineral group, cubic, various garnet varieties 9 Almandine / Stellarton, Nova Scotia, Canada / Fe3Al2(SiO4)3, garnet group, dark red to purple-red 10 Azurite / Pardos, Spain / Cu3(CO3)2(OH)2, monoclinic, royal blue crystals 11 Aragonite / Spain or Morocco / Aragonite rosettes (sputniks) 12 Actinolite and Muscovite / Zillertal, Tyrol, Austria / Ca2(Mg,Fe)5[Si8O22](OH)2 + KAl2(AlSi3O10)(OH)2, amphibole + mica 13 Apatite / Brazil / Ca5(PO4)3(F,Cl,OH), phosphate mineral, hexagonal 14 Azurite with Malachite / Morocco / Cu3(CO3)2(OH)2 + Cu2CO3(OH)2, blue-green combination (azurite with malachite) 15 Lyons: Lepidolite / Antsirabe, Madagascar / KLi2Al(Si4O10)(F,OH)2, lithium-bearing mica, pink/purple 16 Actinolite / Zillertal, Austria / Ca2(Mg,Fe)5Si8O22(OH)2, amphibole group, green needle crystals 17 Apatite / USSR / Ca5(PO4)3(F,Cl,OH), phosphate mineral 18 Axinite / Nikolajev Mine, Dalnegorsk, Far East / Ca2Fe++Al2BSi2O15(OH), triclinic, dark sharp crystals 19 Neptunite on matrix of natrolite / New Idria mine (Benitoite Gem Mine) San Benito County, California, USA / Na2Fe++TiSi4O12·2H2O, shiny black crystals on white natrolite 20 Auricalcite / Mexico / CaZn3(CO3)2(OH)4·H3O+, bright yellow botryoidal or velvety crusts 21 Amarantite / Bofedal de la Tapa Tapa, Bolivia / Cu3Fe++(SO4)4(OH)3·7H2O, rare copper-iron sulfate, orange-red 22 Aragonite / Spain / Needle or fibrous variety of Aragonite 23 Amblygonite, Fluorapatite / Freiung, Germany / Phosphate/mica combination ((Na,K)Al2(AlSi3O10)(OH)2 etc.) 24 Actinolite / Val Malenco, Italy / Austria / Ca2(Mg,Fe)5Si8O22(OH)2, green amphibole needles 25 Unpolished Aventurine / SiO2 with inclusions of green amphibole or mica (green quartz) 26 Fluorite / Hunan, China / Derbyshire, England / CaF2, cubic, strongly fluorescent under UV light, various colors 27 Firoilte / Unknown historical locality / Possibly historical label name or variant 28 Chalcanthite / Rio Tinto mine, Andalusia, Spain / CuSO4·5H2O, copper sulfate, blue, water-soluble 29 Aragonite / Morocco / Spain / Very bright under UV light, 2x intense green, 1x intense pink 30 Pyrope / Bohemia, Czechia / South Africa / Rough garnet 31 Scapolite / Madagascar / Bancroft, Ontario, Canada / (Na,Ca)4[(Al,Si)12O24](Cl,CO3,SO4)1-2, tetragonal tectosilicate 32 Iepidoliet / Madagascar / K(Li,Al)3(Si,Al)4O10(F,OH)2, purple/pink lithium-bearing mica 33 Tornbernite / Shinkolobwe, Katanga, Congo / Cu(UO2)2(PO4)2·8H2O, radioactive uranyl phosphate, bright green 34 Emerald / Brazil / Be3Al2(SiO3)6, beryl variety, bright green due to chromium 35 Sugilite / Wessels Mine, Kalahari, South Africa / Rare purple silicate mineral 36 Flogopite / Madagascar / Canada / Magnesium-rich mica / Mica group 37 Realgar / Nevada, USA / Arsenic sulfide 38 Rose Quartz / Minas Gerais, Brazil / Madagascar / SiO2, macrocrystalline quartz, pink due to manganese/titanium traces 39 Amber / East Germany / Fossil tree resin, amorphous, warm yellow/orange, organic 40 Azurite Malachite / Mibladen, Morocco / Katanga, Congo / Classic combo of azurite (blue) and malachite (green) 41 Sodalite / Ilimaussaq, Greenland / Rough sodalite 42 Pyrop / South Africa / Kimberley / Iron sulfide (fool’s gold) 43 Stibnite / Herja, Romania / Sb2S3, lead-gray, elongated radiant crystals 44 Iron Rose / Rio Marina, Elba, Italy / Fe2O3, hematite microcrystals arranged as a rosette (iron rose) 45 Vanadinite / Mibladen, Morocco / Pb5(VO4)3Cl, vanadate mineral, striking orange-red hexagonal crystals 46 Hematite / Warstein, Germany / Iron oxide 47 Dioptase / Tsumeb, Namibia / Cu3(SiO3)4(OH)2·H4O, deep emerald-green cyclosilicate 48 Malachite? / Katanga, Congo / Cu2CO3(OH)2, basic copper carbonate, bright green 49 Pyrite / Logroño, La Rioja, Spain / FeS2, cubic, 'fool’s gold', brass-yellow with strong metallic luster 50 Pyromorphite / Daoping Mine, China / Pb5(PO4)3Cl, phosphate and chloride mineral, clear green hexagonal crystals

Stima:€150

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