heliophyllite

heliophyllite

[‚hē·lē·ō′fi‚līt]
(mineralogy)
Pb6 As2O7Cl4 A yellow to greenish-yellow, orthorhombic mineral consisting of an oxychloride of lead and arsenic; occurs in massive and tabular form and as crystals.
References in periodicals archive ?
Philolithite is mineralogically and genetically related to the lead oxychloride "family," which at Langban presently comprises blixite, ekdemite, freedite, heliophyllite, mendipite, nadorite, petite, sahlinite, and sundiusite.