Gold Hill
... that California's Gold Country quartz-mining industry was precipitated by a quartz gold discovery on Gold Hill?
... that <a href="./California" id="mwBHg" rel="mw:WikiLink" title="California">California</a>'s <a href="./Gold_Country" id="mwBHk" rel="mw:WikiLink" title="Gold Country">Gold Country</a> quartz-<a href="./Mining" id="mwBHo" rel="mw:WikiLink" title="Mining">mining</a> industry was precipitated by a <a href="./Quartz" id="mwBHs" rel="mw:WikiLink" title="Quartz">quartz</a> <a href="./Gold" id="mwBHw" rel="mw:WikiLink" title="Gold">gold</a> discovery on <b id="mwBH0"><a class="mw-redirect" href="./Gold_Hill,_Grass_Valley,_California" id="mwBH4" rel="mw:WikiLink" title="Gold Hill, Grass Valley, California">Gold Hill</a></b>?