The term VEIN CONTENTS refers to the materials found in a vein, which is an elongated mineral deposit. The crossword solutions for this term are LODE (4 letters), ORE (3 letters), DEPOSITS (8 letters), and ORES (4 letters). A LODE is a vein or deposit of ORE, while ORE is a naturally occurring mineral containing valuable metals. Deposits refer to the accumulation of ORE, and ores are the minerals from which metals are extracted.