{"id":125,"date":"2009-08-13T02:04:52","date_gmt":"2009-08-13T07:04:52","guid":{"rendered":"http:\/\/dailyjewel.userblogs.ganoksin.coms\/2009\/08\/13\/last-day-minerals-harder-than-quartz\/"},"modified":"2009-08-13T02:04:52","modified_gmt":"2009-08-13T07:04:52","slug":"last-day-minerals-harder-than-quartz","status":"publish","type":"post","link":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/2009\/08\/13\/last-day-minerals-harder-than-quartz\/","title":{"rendered":"LAST DAY!!!  Minerals Harder Than Quartz"},"content":{"rendered":"<p><a href=\"http:\/\/1.bp.blogspot.com\/_dYOW3_y9xoY\/SoNIgE63J4I\/AAAAAAAACJU\/axN01KUA5UI\/s1600-h\/Elbaite.jpeg\"><img style=\"float:left;margin:0 10px 10px 0;width: 192px;height: 320px\" src=\"http:\/\/dailyjewel.userblogs.ganoksin.coms\/wp-content\/plugins\/wp-o-matic\/cache\/ab585_Elbaite.jpeg\" border=\"0\" alt=\"\" \/><\/a><span><br \/><\/span><span><span>40 specimens of minerals have been placed in our current theme auction.  The focus this week is on minerals with a<br \/>hardness greater than that of quartz.  Please feel free to take a look at:<\/p>\n<p><\/span><a href=\"http:\/\/auction2.mineral-auctions.com\/\" target=\"_blank\"><span><span>http:\/\/auction2.mineral-auctions.com<\/span><\/span><\/a><span><\/p>\n<p>FYI, the measure of minerals hardness is generally given using Mohs Scale.  This was devised in 1812 by <\/span><span><span>Friedrich Mohs<\/span><\/span><span> using 10 commonly available minerals.  Because of this, it is usually easy to find the 10 reference minerals (with the possible exception of diamonds).  There is a good summary to be found at:<\/p>\n<p><\/span><a href=\"http:\/\/www.allaboutgemstones.com\/mohs_hardness_scale.html\" target=\"_blank\"><span><span>http:\/\/www.allaboutgemstones.com\/mohs_hardness_scale.html<\/span><\/span><\/a><span><\/p>\n<p>It includes a graphical comparison to absolute hardness.  The numbers refer to the ability of one mineral to scratch the surface of another.  This can get confusing when some harder minerals tend<img src=\"http:\/\/dailyjewel.userblogs.ganoksin.coms\/wp-content\/plugins\/wp-o-matic\/cache\/ab585_pezzottaite.jpeg\" style=\"float:right;margin:0 0 10px 10px;width: 320px;height: 308px\" border=\"0\" alt=\"\" \/> to crumble (we might call them<br \/>friable), have strong cleaveages (it is easy to cleave topaz even though it is quite hard), or have different hardness in different directions (kyanite). So, have fun looking and think a bit about how you might use hardness to identify<br \/>an unknown mineral.<\/p>\n<p>One interesting usage of the harder than quartz question is whether or not a mineral is suitable for use in a ring.  Since quartz is a common component of dust, you might not want to choose something softer than quartz as it will get scratched over time.<\/span><\/span><\/p>\n<div><span><span><br \/><\/span><\/span><\/div>\n<div><span><span>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<\/span><\/span><\/div>\n<div><span><b><i><span>Thanks once again Keith  I love these themed auctions and the information that comes along with it!<\/span><\/i><\/b><\/span><\/div>\n<div><span><b><i><span><br \/><\/span><\/i><\/b><\/span><\/div>\n<div><span><b><i><a href=\"http:\/\/auction2.mineral-auctions.com\/\"><span>Trinity Mineral Company Auctions<\/span><\/a><\/i><\/b><\/span><\/div>\n<div><img loading=\"lazy\" width=\"1\" height=\"1\" src=\"http:\/\/dailyjewel.userblogs.ganoksin.coms\/wp-content\/plugins\/wp-o-matic\/cache\/dc4db_4698837677539896356-8862637838193935838?l=dailyjewel.blogspot.com\" \/><\/div>\n","protected":false},"excerpt":{"rendered":"<p>40 specimens of minerals have been placed in our current theme auction. The focus this week is on minerals with ahardness greater than that of quartz. Please feel free to take a look at: http:\/\/auction2.mineral-auctions.com FYI, the measure of minerals hardness is generally given using Mohs Scale. This was devised in 1812 by Friedrich Mohs [&hellip;]<\/p>\n","protected":false},"author":102,"featured_media":0,"comment_status":"open","ping_status":"1","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/posts\/125"}],"collection":[{"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/users\/102"}],"replies":[{"embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/comments?post=125"}],"version-history":[{"count":0,"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/posts\/125\/revisions"}],"wp:attachment":[{"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/media?parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/categories?post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/dailyjewel\/wp-json\/wp\/v2\/tags?post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}