What are some eight-letter minerals?

28 of the 153 minerals in Icillion have exactly 8 letters, for example Feldspar, Graphite and Amethyst.

Which eight-letter minerals start with S?

S is the most common first letter here, with 6 names, such as Sapphire, Selenite, Siderite, Sodalite and Stibnite.

Chemistry · lists

28 eight-letter minerals in alphabetical order, from “Amethyst” to “Wurtzite”. Each one counts as an answer in Icillion.

28 of the 153 minerals have exactly 8 letters (18%).
Most start with S (6), C (4) and A (3).
Only names of one word are counted, and only their letters: spaces, hyphens and apostrophes are not.

What are some eight-letter minerals?: 28 of the 153 minerals in Icillion have exactly 8 letters, for example Feldspar, Graphite and Amethyst.
Which eight-letter minerals start with S?: S is the most common first letter here, with 6 names, such as Sapphire, Selenite, Siderite, Sodalite and Stibnite.

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