Assertion: cryolite | /r/HasProperty | accompanied by galena
Facets:
Source sentences:
text: Once our shivering crew of geologists is disembarked at Ivigtut (latitude 61N), they know that they want to look for a "granitic vein running through gneiss," and that the cryolite is "accompanied by quartz, siderite, galena, blende, [and] chalcopyrite.