Photomicrographs of Heavy Mineral Grains from Till

The mineral grains vary from 63 to 250 µm and are mounted between microscope slide and cover slip in epoxy cement.
The original diapositives were taken through a Zeiss, Stemi SR, stereoscopic microscope.


Native elements
Gold

Sulphides
Pyrite  Pyrite

Oxides
Anatase Gahnite  Hematite  Magnetite 
Cassiterite  Goethite/limonite   Ilmenite  Rutile 
Chromite  Goethite/limonite 2 Ilmenite 

Carbonates
Siderite
 
Amphiboles
Hornblende Hornblende, X polars 

Pyroxenes
Diopside Hypersthene  Chrome diopside  Bronzite 

Cyclo/sorosilicates 
Chloritoid  Epidote 

Nesosilicates
Garnets  Titanite  Zircons 
Kyanite  Staurolite  Zircons, rounded 
Pyrope  Staurolite X-polars 

Phosphates
Monazite 

Sulphates
Barite 

Tungstates
Scheelite 

Non mineral
Contamination 


Consorminex Title Page | Geochemical surveys | Sample preparation | Heavy mineral analysis | Gold grain studies |
Kimberlite indicators | Pebble analysis | Photos of heavy minerals | Français