Hydrated phosphate containing halogen
Specific gravity: 2.47
Colour: Colourless, white, greenish yellow; colourless in transmitted light.
Solubility: Readily soluble in warm dilute NaOH and in hot concentrated hydrochloric and sulphuric acids, and slowly soluble in warm dilute nitric acid (AM 18.512).
Minyulite is commonly associated with wavellite and
fluellite, and less commonly with aldermanite,
leucophosphite, cacoxenite and
tinsleyite (AJM 17.1.22), and also with
dufrénite, apatite and
At Wolffdene quarry, Logan City Shire, Queensland, Australia, minyulite occurs with fluellite (Dana).
At the Moculta quarry, Angaston, Barossa Valley, Mount Lofty Ranges, South Australia, minyulite is found growing on apatite and associated with fluellite (AM 17.1.22).
At Wait's quarry, Noarlunga, Angaston, Mount Lofty Ranges, South Australia, minyulite occurs with dufrénite in altered outcrops of glauconite-bearing phosphate beds (Dana).
At the type locality, the Minyulo Well, Dandaragan, Dandaragan Shire, Western Australia, minyulite occurs filling minute veins or cavities in a highly phosphatic ironstone bed made up of limonite, quartz, dufrénite, apatite and glauconite (AM 18.512), associated with wavellite, variscite, leucophosphite, glauconite, fluellite, dufrénite and apatite (Mindat)
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