Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
rutile OR money stone OR red schorl (obs.) OR crispite
Explanation: Here a whole breakdown for your rock, from LGDT:
A titanium dioxide of the tetragonal system polymorphous with anatase and brookite. Black, deep red, or brownish red. (b)
titanic schorl (a)
Note(s): Titanic schorl is obsolete. (b)
money stone (a)
Note(s): Money stone is a fancy name for rutile. (b)
red schorl (a)
Note(s): Red schorl is obsolete. (b)
Note(s): Crispite is sometimes applied to sagenitic quartz containing acicular inclusions of rutile. (b)
Note(s): Edisonite is a name for mottled turquoise or an obsolete name for rutile. (b)
Note(s): Nigrine is a name for black rutile. (b)