Abstract: Laotian rockmass occurs in a belt of magmatic complex in the southwest of Henan and is a granitic cryptoexplosive breccia formed in late Indo-Chinese-Yanshan period.Gold and gold-silver-lead-zinc polymetallic deposits have been formed in and around it.The paper discloses the genesis connection from metallogenic mechanism, proposes the short and long period metallization of cryptoexplosive breccia and summarizes the regularity of this rockmass and its deposit in spatial distribution, thus breaking through the restriction of the previous recognition of single ore type from this deposit and pointing out the direction of future prospecting and prospecting of multiple types of ores in cryptoexplosive breccia area.

Key words: Cryptoexplosive breccia rockmass, Polymetallic ore deposit, Ore-carrying fluid, Metallogenic , substances