Below you may find the With 1 being the softest on the Mohs scale of hardness this substance consisting primarily of silica is the index mineral for 7 which is part of the Jeopardy Archive. In case the question or answer is wrong or something is missing do not hesitate to contact us and we will be glad to help you out. This question was last seen on March 7 2022 Jeopardy! TV Game Show.

If you would like to check other Jeopardy Questions and Answers then head over to our homepage