Lava is made up of crystals, volcanic glass, and bubbles (volcanic gases). As magma gets closer to the surface and cools, it begins to crystallize minerals like olivine and form bubbles of volcanic gases. When lava erupts it is made up of a slush of crystals, liquid, and bubbles. The liquid freezes to form volcanic glass. Chemically lava is made of the elements silicon, oxygen, aluminum, iron, magnesium, calcium, sodium, potassium, phosphorus, and titanium (plus other elements in very small concentrations. Have a look at the background information in Minerals, Magma, and Volcanic Rocks.
The HoverJack has a weight limit of 1200 lbs. When lifting a heavy patient, extra caution must be taken to center him or her properly on the HoverJack. partners
The 6.8kg weight limit has been questioned, debated, and reconsidered throughout the past thirteen years, but it now seems to be outdated to the point of absurdity. At the Tour de France we noticed many team mechanics adding weight to riderâs bikes in order to meet the minimum weight limit. They would put a couple hundred grams of fishing weights in the seatposts, handlebars, or chainstays to boost the weight up to 6.8kg.