Compound carbonate, polymorph of leadhillite and susannite
Specific gravity: 6.5
Hardness: 2½ to 3
Colour: Colourless, white, very pale amber
Solubility: Soluble in dilute acids AM 70.874
Macphersonite is an uncommon secondary mineral in the zone of oxidation of lead deposits, associated with
mattheddleite, galena and
At the the Argentolle Mine, Saint-Prix, Saone-et-Loire, France, macphersonite is found with susannite, cerussite, pyromorphite, galena, quartz and scotlandite (AM 70.874).
At Red Gill, Allerdale, Cumbria, England, UK, Macphersonite, the rarest of the basic lead-sulphate carbonates, has been identified on a single specimen, in a cavity in quartz veinstone with susannite, caledonite and mattheddleite (JRS 11.39).
At the type locality, the Susanna Mine, Leadhills, South Lanarkshire, Scotland, UK, macphersonite is associated with leadhillite, susannite, cerussite, caledonite and pyromorphite (AM 70.874).
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