Quartzite?! It passed the “glass scratch test”
Mcc
4 years ago
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Sammy
4 years agolast modified: 4 years agoRelated Discussions
question about "glass test"
Comments (9)It really looks the same as Super White, sorry to say. Be careful of the glass test with super white. Our super white, which is mostly marble, has veins of a much harder stone running through it (the clearish/milky/opalescent white parts). Those veins neither etch nor scratch--my counter has zillions of tiny little scratches, but wherever they cross one of the harder veins, the scratch is interrupted until it gets to the softer marble part again. Also, be aware it may not fizz right away with vinegar. If I put vinegar on a chunk from the slab that made my bathroom marble counters (calacatta gold), it will fizz and etch immediately. If I put the same type of vinegar on my super white kitchen counters, it will not fizz, and it doesn't leave an etch mark at all if it's wiped off within a minute or two. I don't know why there's such a difference in etching speed, but it does make my kitchen counters much easier to live with. To test it, I'd recommend letting the vinegar or lemon juice sit for half an hour and then check for a mark. I suspect you'll see one because I think it's the same as super white, which Karin MT says is dolomitic marble....See MoreDolomite/Quartzite test confusion
Comments (8)Are you sure the sample you got are actually those slabs because they don't look like them at all. Likely the samples have not been sealed, your countertops will be. My fantasy brown which looks a lot like fantasy blue because it has a lot of blue gray and just smaller amounts of light brown, doesn't stain so far or etch and it scratches the heck out of glass. I think each individual slab has to tell it's own story and know exactly what you are looking at. I got a piece of my actual slab to test. I knew it wasn't sealed. My countertops are well sealed. That fantasy blue slab there is gorgeous I would be all over that one....See More50 Shades of Quartzite (AKA, is quartzite porous?)
Comments (24)"The natural stone industry pays her to shill for them...Karin needs to tell her Brazilian overlords that she's out of scientific and technical lipstick to put on their impoted pigs...Karin, I challenge you to put your geologist brain to work coming up with a solution to the pervasive problems inherent in the quartzite aspect of the natural stone industry" The irony is that in this very thread, Karin has written at length about quartzite and its properties, and has written numerous other posts about testing quartzites and what to watch out for. Apparently @joseph_corlett wants Karin Kirk to solve all the problems of the stone industry. @joseph_corlett's comments above about Karin Kirk are despicable even for him who frequently tosses out supercilious comments on this forum. @joseph_corlett - provide backup that Karin, as you put it, has "Brazilian overlords". Provide backup for your statement that "The natural stone industry pays her to shill for them". You are one to frequently talk of lawsuits on this forum. Yet here you are, fervently making libelous statements about Karin. If Karin did not respond to the recent comments by @Lindsey Brady and @jmh0405, it could be because they have not actually tagged her, so how is she supposed to know she is being asked a question. Her tag is @karin_mt. Though with what Joseph Corlett wrote about her, I wouldn't blame her for not coming back to this forum. Karin Kirk has a website with her contact info if you want to look her up. BTW, Karin holds a bachelors in geology from Skidmore College and a masters in Earth Sciences from Montana State University. She has taught courses about climate change, ran energy conservation projects, worked on national-scale climate education efforts, and worked with NOAA on its Climate.gov website. She also has a TED Talk on climate change if you are interested. (There are about 100,000 people that apply to give a TED Talk every year. 100 get selected.)...See Morehow to Glass scratch test quartzite at stone yard when sealed up?
Comments (1)Tell them if they want to make a sale they've got to provide access for testing....See MoreSammy
4 years agoMcc
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