Question
Click on examples of quartz.
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{"title":"Quartz","description":"","type":"correct","color":"#99cc00","code":"[{\"shape\":\"poly\",\"coords\":\"158,38,159,48,162,56,161,66,177,72,192,68,207,74,221,69,221,-1,187,5,184,9,181,31,167,36\"},{\"shape\":\"poly\",\"coords\":\"148,37,155,44,148,50,138,39,125,9,111,15,107,-5,146,1,143,0\"},{\"shape\":\"poly\",\"coords\":\"55,197,65,219,82,220,83,223,-1,223,1,178,17,190,28,183,35,194\"},{\"shape\":\"poly\",\"coords\":\"1,83,23,65,53,62,61,45,88,1,42,1,32,13,20,13,10,24,0,22\"},{\"shape\":\"poly\",\"coords\":\"196,166,214,161,221,169,221,209,208,194\"},{\"shape\":\"poly\",\"coords\":\"175,211,187,212,200,222,170,222\"},{\"shape\":\"poly\",\"coords\":\"1,86,16,86,25,104,48,102,58,118,45,130,25,121,17,122,-1,126\"},{\"shape\":\"poly\",\"coords\":\"56,158,61,162,64,152,72,145,76,131,86,131,93,125,104,128,114,141,109,151,110,157,98,160,105,168,113,176,137,140,145,138,158,129,153,110,140,102,126,109,118,112,109,96,107,93,106,108,87,114,74,113,55,126,41,134,41,144\"}]"}
{"title":"Biotite","description":"This is the mineral biotite.","type":"incorrect","color":"#993300","code":"[{\"shape\":\"poly\",\"coords\":\"149,35,163,37,182,31,183,3,141,6\"},{\"shape\":\"poly\",\"coords\":\"119,110,154,86,134,38,118,37,107,66,117,84,109,94\"},{\"shape\":\"poly\",\"coords\":\"96,128,106,133,111,142,107,158,98,158,102,168,114,175,100,183,99,189,109,193,104,209,83,217,64,220,59,197,78,178,63,179,51,166,61,163,69,152,77,136,92,128\"},{\"shape\":\"poly\",\"coords\":\"1,0,39,0,34,12,18,12,10,24,0,21,0,18\"}]"}
{"title":"feldspar","description":"This is the mineral feldspar.","type":"incorrect","color":"#ff9900","code":"[{\"shape\":\"poly\",\"coords\":\"87,2,106,2,109,19,125,16,135,31,135,38,114,35,105,70,115,83,104,95,109,106,90,108,72,108,54,125,59,112,46,97,21,101,21,84,-1,84,22,72,55,65,69,38\"},{\"shape\":\"poly\",\"coords\":\"143,52,159,52,164,70,195,73,218,71,218,166,202,157,194,170,209,202,215,212,215,222,198,218,186,206,169,212,167,223,93,221,93,217,107,206,113,193,101,187,119,172,133,150,158,132,164,125,149,104,146,102,159,85\"},{\"shape\":\"poly\",\"coords\":\"3,130,14,121,44,131,34,140,53,158,51,178,73,181,55,195,33,192,23,178,15,188,-4,174\"}]"}
Source: John Grotzinger/Ramón Rivera-Moret/Harvard Mineralogical Museum
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