How did Flint get so bad?
How did Flint get so bad?
The Flint water crisis was a public health crisis that started in 2014 and lasted until 2019, after the drinking water for the city of Flint, Michigan was contaminated with lead and possibly Legionella bacteria. Between 6,000 and 12,000 children were exposed to drinking water with high levels of lead.
Is Flint a suburb of Detroit?
Flint is the largest city and seat of Genesee County, Michigan, United States. Located along the Flint River, 66 miles (106 km) northwest of Detroit, it is a principal city within the region known as Mid Michigan. Since the late 1960s, Flint has faced several crises.
What is Flint famous for?
Flint is most known for being the birthplace of General Motors, and the Flint Sit-Down Strike of 1936 and 1937, that played a vital role in the formation of the United Auto Workers.
Is Flint the most dangerous city?
Most dangerous city in the U.S. Flint has been consistently ranked as one of the most dangerous cities in the United States by multiple sources. From 2007 to 2009, violent crime in Flint was ranked in the top five among U.S. cities with a population of at least 50,000 people.
What does Flint look like?
Inside the nodule, flint is usually dark grey, black, green, white or brown in colour, and often has a glassy or waxy appearance. A thin layer on the outside of the nodules is usually different in colour, typically white and rough in texture. The nodules can often be found along streams and beaches.
Is Flint a chert?
Flint Is A Variety of Chert Although there is a lot of confusion on this, chert refers to cryptocrystalline or polycrystalline quartz that usually forms as nodules in limestone. Flint is reserved for such material that forms in chalk or marl. Flint is simply a type of chert.
How do you tell if Flint has been worked?
If the flint does not look like one of the tools above, but you think it has been worked by man there are some key characteristics to look for. A bulb of percussion – this is a smooth rounded knob at one end where the flint has been struck away from the main piece. You may also see concentric ripples from this point.
Where can I find flint and chert?
Chert and flint occur as individual nodules or layers of nodules in limestone or dolomite; they are common in rocks of all ages (notably in the Cretaceous chalk of England). Hard and chemically resistant, the nodules become concentrated in residual soils as the surrounding carbonate rock weathers away.
Where is chert commonly found?
Thick beds of chert occur in deep marine deposits. These thickly bedded cherts include the novaculite of the Ouachita Mountains of Arkansas, Oklahoma, and similar occurrences in Texas and South Carolina in the United States.
Where does chert come from?
Chert is a sedimentary rock rich in silica. Franciscan chert is formed from the tiny silica shells (0.5-1 mm) of marine plankton called Radiolaria. Radiolarian chert forms where two conditions are met.
What is chert used for today?
In some areas, chert is ubiquitous as stream gravel and fieldstone and is currently used as construction material and road surfacing. Part of chert’s popularity in road surfacing or driveway construction is that rain tends to firm and compact chert while other fill often gets muddy when wet.
Can chert scratch glass?
Quartz is harder than any of the common minerals in meteorites. Quartz is so hard that it will easily make a deep scratch in glass. The next mark was made with a piece of chert, which is another form of quartz. The two scratches at the bottom were made with ordinary chondrite.
Where are shales found?
Shales are often found with layers of sandstone or limestone. They typically form in environments where muds, silts, and other sediments were deposited by gentle transporting currents and became compacted, as, for example, the deep-ocean floor, basins of shallow seas, river floodplains, and playas.
Where is mudstone found?
Mudstone is made up of fine-grained clay particles (<0.05mm) compressed together. Mudstones form where clay has settled out in calm water – in lakes, lagoons, or deep sea.
What type of rock is phyllite?
Metamorphic rocks
Is there gold in shale rock?
The principal gold-bearing stratum is supposed to be the Benton group, including the Ostrea shales and the Blue Hill shales. It is stated that these rocks over practically the whole of the areas in which they occur contain more or less gold and silver, though the metals may be rather irregularly distributed.
Is fool’s gold magnetic?
Pyrite and gold both have a brilliant metallic luster but are different tones of yellow. Even though gold is a metal, it is a non-ferrous metal (i.e. has low iron content), so it will not stick to a magnet; pyrite, however, has a high iron content and will! For instance, fool’s gold will float in water.
What are the signs of gold in the ground?
Eight Natural Geologic Signs Pointing Toward Gold
- Color Changes: In many districts, acidic mineral solutions have bleached the area rocks to a lighter color.
- Iron Staining & Gossans: Not all veins produce much quartz – gold bearing veins can consist of calcite or mostly sulfides – which often weather into iron stained spots when the pyrites convert to iron oxides.
How can you tell gold from pyrite?
Color: Gold and pyrite both have a brilliant metallic luster, but are different tones of yellow. Gold is golden to silvery yellow, whereas pyrite is a pale to medium brassy yellow that sometimes tarnishes.
