Sir Edward Kelley (or Kelly) is well known medieval alchemist. He was born in Worchester, England in 1555. He is believed to study in Oxford under name of Edward Talbot. He was not very successful in England (they cut off his ears), so then he lived a nomadic life in Central Europe. Finally he found the patronage of the wealthy Bohemian count Vilém Rožmberk and settled in the town of Trebon and continued his researches. By 1590, Kelley was living an opulent life. He received several estates and large sums of money from Rožmberk and he also convinced a lot of men of influence that he possesses the secret of transmuting base metals into gold. Emperor Rudolf II made Kelley a "Baron of the Kingdom," but eventually he was tired of waiting for results and arrested him. Kelley agreed to cooperate and produce gold on a large scale. But he was not successful and was imprisoned again. He died when he tried to escape from prison and his secrecies were lost (apparently) forever.
Key players and other important alchemistical substances
Vitriol (sulphuric acid, H2SO4) was widely considered the most important alchemical substance, intended to be used as a philosopher's stone. The importance of VITRIOL to alchemy is highlighted in the alchemical motto, Visita Interiora Terrae Rectificando Invenies Occultum Lapidem which is a backronym meaning 'Visit the interior of the earth and rectifying (i.e. purifying) you will find the hidden/secret stone. (from Wikipedia)
Aqua fortis, or "strong water," in alchemy, is a corrosive solution of nitric acid (HNO3) in water. was used in alchemy as a solvent for dissolving silver and most other metals with notable exceptions of gold and platinum that can only be dissolved using aqua regia.
Aqua regia or aqua regis (Latin for royal water or king's water) is a highly corrosive, fuming yellow or red solution, also called nitro-hydrochloric acid. The mixture is formed by freshly mixing concentrated nitric acid and concentrated hydrochloric acid, usually in a volumetric ratio of 1:3 respectively. It was named so because it can dissolve the so-called "royal metals," or noble metals, gold and platinum. However, tantalum, iridium, osmium, titanium and a few other metals are capable of withstanding chemical attack from it.
Vanadium (V) is a chemical element; it is soft, silvery gray ductile transition metal. It was named after the Scandinavian goddess of beauty and fertility, Vanadis (Freya).
Scandium (III) Bromide (ScBr3) is chemical compound that is very soluble in water. It is Lewis acid.
So, if you solved the coordinates you need a bit more information and only a few more steps. And they are here on the paper found in Trebon, Czech Republic. This final piece of information will bring you to the exact location.
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