Scolecite is a great team stone.  It is often used for group based projects to pull the team together into a more cohesive group and also in offices to engender team spirit.  It has also been used to pull a group of stones together into a united effort toward some issue.  It seems to function as a  harmonizing force between the different energies but also appears to improve  the communication (for want of a better term) between one another.  So instead of each crystal just doing its bit, they all work together in a synergistic effort - far more powerful.
 
Pictured are examples, (stones sold individually) shapes and color may vary somewhat
 
Small 35-40mm
Medium 45-50mm
Large 55-60mm
 
Scolecite Healing Properties and other items