TL;DR: Sulfur is a main entry in the 外星矿物知识引擎 database.
Sulfur extracted from troilite in lunar regolith enables production of sulfur concrete - a water-free construction material that sets rapidly in the lunar environment. This is one of the most practical near-term ISRU construction methods, requiring only sulfur and aggregate regolith heated to 130-140°C.
Crystal System
Orthorhombic
Occurrence
Lunar regolith (as troilite FeS); volcanic deposits on Io; common in meteorites
Significance
Key ingredient for sulfur concrete (water-free construction material); hot-melt extrusion for lunar 3D printing
Source
Apollo samples, lunar regolith studies