Static electricity with calcium carbonate particles
Some links of a commercial equipment to avoid problems of static electricity in powders during weighing: 

https://www.mt.com/us/en/home/products/Laboratory_Weighing_Solutions/Accessories/anti_static_devices.html

http://lab.mt.com/antistatic/

https://www.mt.com/dam/mt_ext_files/Editorial/Generic/6/Anti-static_0x000246700004f0770006d93b_files/ion_e.pdf