Natural glass is not considered a mineral because it
Natural glass is NOT considered a mineral because it ____________.
a. is not produced by geologic processes
b. is organic
c. does not have a fixed crystalline structure
d. can be made synthetically as well as being a naturally occurring substance
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For decades, new york city has had to deal with the vandalism and defacement of public property caused by unauthorized graffiti. Among other attempts to stop the damage, in December 2005 the city banned the sale of aerosol spray-paing cans and bro
According to the concept of ____, the pay for jobs requiring comparable levels of knowledge, skill, and ability should be similar even if actual duties differ significantly.
The Immigration Reform and Control Act
Which of the following is NOT a mineral?
In which type of silicate are the greatest proportion of oxygen atoms shared by pairs of adjacent tetrahedra?
The New Age practice of surrounding one’s self with crystals has a strong positive effect on ____________. Which of the following is NOT a way crystals can form?
How is chloride different from chlorine? The silica tetrahedron that forms the backbone of all the silicate minerals is composed of silicon and what other element?
Gemstones are commonly found in pegmatites, which are igneous rocks that are ____________. Cleavage in minerals refers to ____________.
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