(1) To study anticancer effect of orpiment nanoparticles on leukemia K562 cells and liver cancer SMMC-7721 cells, compared with that of traditional orpiment.

(2) The existence of realgar and orpiment is harmful to the growth and prolongs the lag phase.

(3) Objective: To study the possible mechanism of red orpiment, which is main component of composite indigo naturalis tablets, in the treatment of acute promyelocytic leukemia(APL).

(4) The orpiment is disintegrated and grinded into powder, and is mixed with abitilguanide according to said ratio evenly. The produced powder can be covered on target place.

(5) The basic principle of refining orpiment and realgar was discussed.

(6) A process mineralogical study was thus made and it was founded that it is mainly realgar and orpiment that affect the gold leaching.

(7) The geological characteristics and major types of realgar and orpiment deposit have been discussed, It is a indicator for explore and study of realgar and orpiment deposit.

(8) The invention discloses a powder preparation that treats herpes zoster, which is produced with orpiment and abitilguanide.

(9) Ores consist of pyrite, blende, aurum, zinckenite, tennantite, antimonite, realgar, and orpiment, belong to typical Low-temperature minerals assemblage.