16 Organic Acids in the Excunination of Minerals. 



Tables sliowing the Behavior of certain Minerals with Citric 

 Acid, alone and with Reagents. 



I. 



Decomposed (in fine powdek) by a saturated solution of 



OiTEic Acid. 



1. — IN THE COLD. 



A. 



B. 



C. 



D. 



Without evolution 



WUh liberation 



With liberation 



With separation 



of Gas. 



of VO,. 



. of H,S. 



of HiOq. 



Clausthalite, 



Calcite, ! 



Stibnite, 



Wollastonite, 



Leucopyrite, 



Dolomite,* 



Galen ite, 



Rhodonite, ! 



Atacamite, 



Gurhotlte, ! 



Alabandite, 



Chrysolite, 



Brucite, 



Ankerite,* 



Sphalerite, 



Willemite, '4 



Gummite, 



Eliodochrosite,* 



Pyrrhotite. 



Nephelite, 



Pyromorphite,* 



Smithsonite,* 





Lapis lazuli, 



Mimetite, 



Aragonite, ! 





Chondrodite, 



Triphylite, 



Witherite, ! 





Pectolite, It 



Triplite, 



Strontianite, ! 





Laumontite, l^ 



Vivianite, ! 



Barytocalcite, ! 





Chrysocolla, ! 



Libethenite, ! 



Cerussite, ! 





Calamine, !| 



Olivenite, ! 



Malachite, ! 





Apophyllite, 



Pseudom alachite, 



Azurite.* 





Thomsonite, ! 



Wavellite, 







Natrolite, IX 



Pharmacosiderite ! 







Mesolite, ! 



Torbernite, 







Analcite, 



Autunite, 







Chabazite, 



Ulexite, ! 







Herschelite,:}: 



Cryptomorphite, ! 







Stilbite, 



Anglesite, 







Deweylite, 



Brochantite. ! 







Prochlorite. 



