Plumbogummite For Sale

Plumbogummite is a semi-rare secondary lead-based mineral that is part of the alunite group. This mineral has a tendency to form oxidation zones of lead deposits as stalactitic, globular, or botryoidal masses, and as druzy encrustations. Though it has been observed in larger hexagonal crystals, these are far more rare. Because of the presence of lead, plumbogummite is almost always electric-blue, green, or teal with a brownish tint. Yellow and gray varieties also exist in certain localities.

This mineral was discovered and named in 1819 by a French mineralogist who coined the term plumbogummite. The name is an allusion to the mineral’s lead content (“plumbo-”) and its gum-like (“-gumite”) texture. This mineral is highly sought after by collectors because of its unique texture and vibrant coloration. The name is also quite fun to say, though it is a mouthful!

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Minerals & Crystals

$2 - $27,500

Where Is Plumbogummite Found?

The type locality for plumbogummite was found in France, but it occurs throughout western Europe. Large, teal crystals come out of Germany and the UK. Most plumbogummite from China is found forming as a secondary mineral after pyromorphite. These crystals are often smaller, druzy crystals or found encrusting untransformed pyromorphite, indicative of the gummy-looking quality in which the mineral derives its name. Other notable plumbogummite sources (though in much smaller quantities) come from Australia and Bolivia. Bolivian specimens tend to appear more yellow in color than the typical shades of blue and teal.

How Does Plumbogummite Form?

Plumbogummite forms as a secondary mineral in the oxidation zones of lead deposits. In these locations, lead has been exposed to air/winds, rains, and groundwater seepage. When the lead comes in contact with these outside forces or extreme pressure changes, a chemical alteration process begins, often leading to the formation of a new mineral. Plumbogummite may form as crusts on rock surfaces or in botryoidal masses, but it typically forms as a secondary mineral after pyromorphite or barite.

Common Associations

The two most common associations of plumbogummite are pyromorphite and barite, which it often forms as a pseudomorph after. It is also found with other lead and lead phosphate based minerals such as mimetite, cerussite, anglesite, and wulfenite.

Where Is Plumbogummite Found?

How Does Plumbogummite Form?

Common Associations