No one will ever see any that are reactive. These are insoluble and for all practical purposes inert. All oxidized minerals must be avoided. All native metals, sulfides, and halides must be avoided. Now, It is impossible to identify any rock by such a description.
Color is the single worst indicator to use without lots of experience.
If it is truly a silicate rock, it simply does not matter what kind of rock it is. If you have a sample and are willing to send it to me, I will look into its composition and description in my spare time. For more information on minerals and mineral ID, contact me off the list.