epsomite

[ ep-suh-mahyt ]

noun

, Mineralogy.

1. the natural form of Epsom salt, Mg 2 SO 4 ⋅7H 2 O, found as a crust in caves and lake deposits.

Word History and Origins

Origin of epsomite¹

1805–15; named after Epsom; -ite ¹

Example Sentences

The mineral cave decor — epsomite, mirabilite, sulfate — rusts into the ruddy orange of iron oxide, the deep black of manganese.

From Salon

This is the West Passage and leads to the Grand Crevice, of which only a small portion has been surveyed; midway of the passage are the Epsom Rooms, two in number, and well supplied with epsomite or native Epsom salts; this is sometimes called the Windy Passage, on account of a rushing current of air met suddenly at the first bend and, no doubt, due to the meeting here of fresh air coming in from the outside with that chemically changed in the Epsom Rooms.

From Project Gutenberg

Epsom-salts, or Epsomite, frequently occurs, as does the Niter, in a crystalline form of the pure mineral, as an efflorescence on rocks in many of the caves and in other sheltered positions.

From Project Gutenberg

With nitrate of cobalt, gives the magnesia reaction Epsomite . ...   .MgS  +

From Project Gutenberg