Minerals to Identify

One of the main goals in this course, and the principal goal of the laboratory portion, is to learn to identify mineral specimens in hand sample (as opposed to using a microscope or other tools). You should be able to identify the minerals below, on their own, or within a rock matrix (assuming the crystals are large enough to determine identifying features).

As you will learn in the lab portion, the main tools you will use for this identification are your hand lens (cleavage, crystal shape, state of aggregation), a hardness set, a streak plate, and a magnet. During labs 2-5, you will compile a personal list of the key features that differentiate each mineral from those others that can look superficially similar.

Group Mineral Collection notes Group Mineral Collection notes
Native Elements Graphite   Sorosilicates Epidote  
Native Elements Sulfur   Sorosilicates Allanite  
Sulfides Chalcocite   Sorosilicates Vesuvianite  
Sulfides Bornite   Cyclosilicates Beryl  
Sulfides Galena   Cyclosilicates Tourmaline  
Sulfides Sphalerite   Inosilicates-P Enstatite  
Sulfides Chalcopyrite   Inosilicates-P Diopside  
Sulfides Stibnite   Inosilicates-P Augite  
Sulfides Pyrite Limonite after pyrite pseudomorphs Inosilicates-P Jadeite  
Sulfides Marcasite   Inosilicates-P Spodumene  
Sulfides Molybdenite   Inosilicates-P Wollastonite  
Oxides Corundum   Inosilicates-A Tremolite  
Oxides Hematite   Inosilicates-A Actinolite  
Oxides Magnetite   Inosilicates-A Hornblende  
Oxides Rutile   Inosilicates-A Glaucophane  
Oxides Uraninite (Name says "Uranite") Phyllosilicates Serpentine  
Oxides Chromite In unmarked tray Phyllosilicates Kaolinite  
Hydroxides Goethite   Phyllosilicates Talc  
Halides Halite   Phyllosilicates Pyrophyllite  
Halides Fluorite   Phyllosilicates Muscovite  
Carbonates Calcite   Phyllosilicates Lepidolite  
Carbonates Siderite   Phyllosilicates Biotite  
Carbonates Rhodochrosite   Phyllosilicates Chlorite  
Carbonates Aragonite   Phyllosilicates Chrysocolla  
Carbonates Dolomite   Tectosilicates Quartz  
Carbonates Malachite   Tectosilicates Cristobalite  
Carbonates Azurite   Tectosilicates Opal  
Borates Ulexite   Tectosilicates Microcline  
Sulfates Barite   Tectosilicates Orthoclase  
Sulfates Gypsum   Tectosilicates Sanidine  
Nesosilicates Forsterite   Tectosilicates Albite  
Nesosilicates Almandine   Tectosilicates Anorthite  
Nesosilicates Andradite   Tectosilicates Leucite  
Nesosilicates Grossular   Tectosilicates Nepheline  
Nesosilicates Zircon   Tectosilicates Sodalite  
Nesosilicates Andalusite   Tectosilicates Natrolite  
Nesosilicates Kyanite   Tectosilicates Stilbite  
Nesosilicates Topaz   Tectosilicates Anorthoclase  
Nesosilicates Staurolite twins
Nesosilicates Titanite  

Notes:

Nesosilicates = Isolated tetrahedra
Sorosilicates = “Bow-tie” paired tetrahedra
Cyclosilicates = Rings of tetrahedra
Inosilicates = Chains of tetrahedra (P=single chain, or pyroxene type; A = double-chain, or amphibole type)
Phyllosilicates = Minerals made out of greek pastry dough
Tectosilicates = Frameworks of tetrahedra


David M. Hirsch
Modified on Sun, Dec 23, 2001, 5:09 PM