Percentage is a ratio. In your question you ask, what value is 20 compared to 3600. solution: (20/3600)*100 = 0.56%, slightly greater than 1/2%
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Nonsilicate
Gold, Silver and Copper belong to the native elements mineral group.
The simple reason is that least reactive elements are mostly found in their native state while reactive elements are found in combined state (in form of their compounds). It is easier to extract any element in it's native or elementary form. Such elements can be easily separated from their ore. They are separated by using physical processes. Reactive elements need to be extracted from their minerals through chemical processes which are more expensive and tedious.
Native elemental minerals.
Native element minerals
What you have listed are not elements (except for the 'native elements'), they are classifications of minerals.
No. Feldspars and hematite are examples of minerals.
They are native elements.
Native elements are a group of minerals with a molecular structure consisting of only one element. Some examples are gold, copper and silver.
Nonsilicate
Native elements such as sulfur, gold, silver, and carbon in the form of diamond and graphite.
Gold, Silver and Copper belong to the native elements mineral group.
There are over four thousand different minerals. There are some major groups of minerals, which include groups such as oxides, silicates, carbonates, phosphates, borates, halides, sulfides, and native elements.
Non-silicate minerals contain oxygen and native elements. They have metallic and non-metallic lusters, and are very common.
A native mineral is composed of atoms of a single element, like gold, copper, and silver. Most minerals are composed of two or more elements.
Native elements are those found by themselves, in pure form, uncombined with other elements into minerals. Of all the elements, only about thirty native elements are known, including metals like copper, gold, lead, and iron; semi-metals like antimony, arsenic, bismuth, and tellurium, and non-metals like diamond, sulfur, and selenium. --------- carbon
Minerals are grouped by their chemical composition. There are more than 3 groups of minerals including. Silicates, oxides, sulfates, sulfides, carbonates, native elements, and halides are all major mineral groups. Silicates are definitely at the top of the list.