What I see in the 3rd picture could be, but hard to tell. Give it the old acid test--a little vinegar, or diluted muriatic will make it fizz if it is a carbonate stone. Where are you located??? Is marble a common stone in the area???
haha, cant say I'd want to spend the night in my basement myself.
I did the vinegar thing, it did not fizz at all.
I know it is some type of purpose intended construction stone and not just random lucky rocks, theyre a consistent 5 1/2 feet wide, 20" depth and 4-5" thick. I like the way they look, very natural in texture and varigation of color as well as unique color You really only see white construction stone in marble but the somewhat irregular surfaces just are not typical with what Ive seen. I think theyd look nice in outdoor landscaping applications.
I wanna' know how they got the thing's there. They must be over 500 lbs a piece.
Hi All, This is a Quartzite for sure very hard and has a very low porosity, if you are going to replace missing pieces or have to repair you probably won't have too much trouble finding pieces in your area just "hand select" once you can actually see the pieces by cleaning the whole staircase up. Be careful not to saturate the whole stair with muriatic as the grout joints are more than likely sand and cement and you could "burn" the grout joints as they will be way softer that the stone itself. Use a 6 to one mix of muriatic/Water (water being the 6 lol) and slowly increase if you have no results cleaning it. Wet it first then apply the mixture and agitate with turks head brush then rinse.
Good luck with the search.
thank's. I was just curious because I work with stone and do landscaping and am consequently interested to know since it's different than what I've seen before... and it's in my house. No need for repair or modification at this time, or any time as far as I can expect. This is all actually dry construction! Believe it or not I washed them before the picture. It's earth behind the risers. No grout, no motar, not even an aggregate behind it,lol.
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