Chromite 101

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Chrome: Essential in the Green Economy! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Some Uses Ball bearings: Almost everything “runs” on them! Wheels for your wheels! Something to “dye” for!! For really strong pipes…and much more!

Chromite Use in the United States

Where does chrome come from? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why are Ultramafic Rocks So Important? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Step 1: Melting in the upper mantle, melt rises to form a magma pool , 5 -10 km below the earths surface Step 2: Melt begins to cool, precipitating mg-rich minerals (olivine, pyroxene) and chromite Step 3: Crystals settle to the bottom of melt chamber, forming layers Step 4; magma is recharged many times, forming multiple layers

Chromite forms distinct layers, but how does it accumulate without olivine or pyroxene? Need to stop silicate precipitation but continue chromite accumulation. How does this happen?

How Does Chromite Form ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Are the Massive Chromite Layers Formed ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summarizing: Contamination Causes Chromite Layers

The Chrome:Iron Ratio in Chromite is Critical ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

World Resources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],These are the major suppliers of chrome ore today: where will Canada fit?

Some Important Statistics Price began to vary in the 1980’s, in response to economic conditions In the past 10 years, rapid price increases caused by demand in China and India Production has increased dramatically; large reserves in South Africa, Kazakhstan and India sufficient to meet demand BUT…. Abilities of major suppliers to produce more are largely dependant on power availability; already limited in all three large producers Consumption per person has doubled in 50 years; industrialization of large nations drives this

Where Does Canada Fit In? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Spider’s Big Daddy Discovery in the Ring of Fire ,[object Object],[object Object],[object Object],Ring of Fire JV Chromite

Gravity Map Outlines Potential Resource ,[object Object],[object Object],[object Object]

Magnetics Help Define Geology Ultramafic rocks have high magnetic susceptibility pattern (dark red)

Geological Interpretation From geophysical and drill data, a preliminary geological map outlines the distribution of key target rocks- the ultramafics- that host Cr and Ni occurrences

Cross-section: Big Daddy Deposit Note the exceptional continuity of the chromite zone to depth It occurs at a very distinct change in rock type (peridotite and pyroxenite) This came abut because during cooling, the precipitation of silicate minerals was interrupted by melt contamination This contamination enabled chromite to accumulate without dilution

The Future: Ring of Fire- The World’s Next Major Chrome Producer ,[object Object],[object Object],[object Object],[object Object]

Acknowledgements ,[object Object],[object Object],[object Object],[object Object],[object Object]

Chromite 101

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Chromite 101