Rensselaerite

1840, https://books.google.co.uk/books?id=OrqB7elAQrwC&pg=PA321&lpg=PA321&dq=%22rensselaerite%22&source=bl&ots=pj8PiIHqLW&sig=TtiKA3EELWApIeKjjdL3aE3kX0E&hl=en&sa=X&ved=0ahUKEwjfx4SR_p7TAhULD8AKHfJxAOA4FBDoAQhAMAk#v=onepage&q=%22rensselaerite%22&f=false ("Assembly: State of New York, Issue 50", published 1840, digitised 2010). To this I may subjoin Rensselaerite, which frequently occurs in thick, heavy beds in connexion with the above.