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The process of producing good mica.
The Suvarna-Raupya-Siddhi-śāstra describes a process of making good mica in this manner.
1. Make powder of black mica - 1 sr. by grinding it in human urine for
21 days. Next grind it in the juice of pita holola (Yellow Myrobalans), make, paste of it with the combination of rasa (juice or mercury ?). Give it fire in a gajapuța again, grind the medicine in such juice, give it gajapuțāgni. Thus give it fire 21 times. That good mica is produced. 1
2. Turn round Bhodala (raw mica! pai 1 bhār seven times and make -tasa (a little modi leaf) seven times by extinguishing it in water,
seven times. Burn (or heat), Kavadi (sheets ?) again. 9 (times), crush them together and make tablet (out of them); put it into fire. Again crush them and make tablet, and get it dried up in fire. Thus heat it by turning it round 3 times, Next it will come into use.2
Pāradadruti of Abhrak (mica) * Drench mica into water for four praharas, next take it out and make its layers, separated. Make them fine (podwer) by grinding them. Then bind the whole thing in a wet cloth for an hour and keep it in the sun. Mix mércuty into it, then put black tolaời golo (a kind of substance not identiñed), make a fine hole under the jar, put a small pot underneath, place it on the furnace, lit fire on the pot fire then there comes out five - coloured flame. Then mercury falls (out of) mercury - coloured mica. Thus it is called pārada druti of mica.3
The chemical process of mica for the medicinal use :
Give 1 pata (roasting) Eclipta alb - wedelia calendulacca (Bhāngrā) to black mica, 2 patas of datura meta, 1, pata of Calotropis gigantea, 1 pata of Euphorbia pilulifera (Nāgadudhi), 1 pața of purple tephrosia (Sarapankha),' 1 pata of adventitous branch of Banian tree (Vadayai), 1 pața of cow's urine to it 3, each pața is followed by the heat of fire for 1 ghaçi (24 minutes).
1, SRSS. Ch. 7.3, 2. SRSS. Ch. VI. 38. : 3. SRSS. Ch. 3, 27. 4. A kind of plant,
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