Not all minerals are used to make jewelry or included in the latest technological devices. Some of these substances  and minerals are just dangerous, really dangerous. So much they can even kill you. However, this is unlikely to happen unless an external action like heating or grinding happens, provoking an extreme reaction.

Nevertheless, because your safety is the most important, here’s a list of seven highly dangerous minerals brought to you by 911metallurgist.

Also http://www.forbes.com/sites/trevornace/2016/02/14/9-deadliest-rocks-and-minerals-on-earth/#3864aaa234d2

Crushing
Grinding
Gravity Concentration
Froth Flotation
Leaching (Gold-Silver/Copper or Others) in Tanks or Heap
Electrowinning and Smelting
Thickening & Filtering / Tailings & Water Treatment
Laboratory & General Mineral Processing

Categories

Concentrator Manuals/Procedures
Crushing & Screening
Dewatering
Equipment
Feeders and Conveyors
Flotation
Flowsheets & Flowcharts
Geology
Gold Extraction
Cyanide Leaching
Gold Refining
Gravity Concentration
Grinding
Ball Mills
Classification
HydroCyclones
Mill Liners
Rod Mills
SAG Mills
Hardness
Innovative Processes
Laboratory Procedures
Library
Maintenance & Mechanical
Metalurgia
Mineralogy
Mining Infographics
Mining News
Pumps and Pumping
Reagents and Chemicals
Safety
Tools of a Metallurgist