Most of them are new to me too. I am familiar with field spar and amethyst,some of the others I have heard of. Bitter Salt is magnesium sulphate, commonly known here as Epsom Salts. Used for bath salts and other interesting properties - I didn't know that if you use diluted mag sulph on your roses, they really thrive :-)
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Date: 2014-01-13 04:05 pm (UTC)From: