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Post by pebblesky on Jun 19, 2024 22:34:17 GMT -5
These seem to tumble very well.
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quartzilla
Cave Dweller 
Member since April 2020
Posts: 1,242
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Post by quartzilla on Jun 23, 2024 21:48:24 GMT -5
Really liking that last yellow one. Have found similar to that around here.
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wargrafix
Cave Dweller
Member since June 2023
Posts: 1,094
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Post by wargrafix on Jun 24, 2024 7:46:46 GMT -5
Really liking that last yellow one. Have found similar to that around here. That yellow one is really stunning! |
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Post by chris1956 on Jun 24, 2024 10:07:44 GMT -5
You're getting fantastic results on these Chris!!  Thanks. Although I didn't post closeups of all the bad ones. LOL. These seem to tumble very well. Thanks Really liking that last yellow one. Have found similar to that around here. I like the yellow too. Really liking that last yellow one. Have found similar to that around here. That yellow one is really stunning! Thanks. Too bad I can't find a 10 pound chunck of it. |
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wargrafix
Cave Dweller
Member since June 2023
Posts: 1,094
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Post by wargrafix on Jun 24, 2024 10:47:30 GMT -5
You're getting fantastic results on these Chris!! Thanks. Although I didn't post closeups of all the bad ones. LOL. These seem to tumble very well. Thanks Really liking that last yellow one. Have found similar to that around here. I like the yellow too. That yellow one is really stunning! Thanks. Too bad I can't find a 10 pound chunck of it. Ah, but can a woodchuck chuck an 11 pound chunk? |
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jamesp
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Member since October 2012
Posts: 36,642
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Post by jamesp on Jun 24, 2024 12:40:53 GMT -5
Quartzite is a great rock to tumble. It can often be found with few fractures being a more homogenous rock than crystalline quartz. It can be a bit porous and absorb metal salts giving it cool colors. You may find creeks that have large amount there. Your territory is beautiful. S Alabama is loaded with heat compressed sand(quartzite). I love collecting it from the quartzite monoculture in the medium sized creeks so common there: www.flickr.com/photos/67205364@N06/albums/72157662367140412/with/22565659004 |
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Post by chris1956 on Jun 24, 2024 21:03:09 GMT -5
Quartzite is a great rock to tumble. It can often be found with few fractures being a more homogenous rock than crystalline quartz. It can be a bit porous and absorb metal salts giving it cool colors. You may find creeks that have large amount there. Your territory is beautiful. S Alabama is loaded with heat compressed sand(quartzite). I love collecting it from the quartzite monoculture in the medium sized creeks so common there: www.flickr.com/photos/67205364@N06/albums/72157662367140412/with/22565659004That is the nice thing about quartzite, you can find it almost everywhere. Great stuff in that tumble! |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,642
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Post by jamesp on Jun 25, 2024 7:33:14 GMT -5
Just below and at the fall line of mid to south Alabama is loaded with fine quartzites. At and above the fall line is the layers of quartzite, the streams flowing over the layers downstream are where the cobbles and pebbles are for about 20 miles. The top layers usually have 'fused' super fine sand composition, the lower layers have fused coarser sand(sugar quartz). As if the sand settled in turbulent water, coarse settled to bottom, finer sands to the top layers. The only reason I mention this is because the top layer super fine sand based quartzite is difficult to differentiate from chert, it is almost glass like or grainless. This top layer is rarely more than 2 inches thick and hard to find. The coarser layers are 6 to 12 inches thick and more common. Ancient men pursued the fine grain quartzite to make their arrowheads. This is some Alabama quartzite from a particular location stained by some type of exotic metal salts:   |
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hplcman
spending too much on rocks
Looking forward to my Friday Night Barrel Clean out!
Member since August 2022
Posts: 497
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Post by hplcman on Jun 25, 2024 9:56:55 GMT -5
Just below and at the fall line of mid to south Alabama is loaded with fine quartzites. At and above the fall line is the layers of quartzite, the streams flowing over the layers downstream are where the cobbles and pebbles are for about 20 miles. The top layers usually have 'fused' super fine sand composition, the lower layers have fused coarser sand(sugar quartz). As if the sand settled in turbulent water, coarse settled to bottom, finer sands to the top layers. The only reason I mention this is because the top layer super fine sand based quartzite is difficult to differentiate from chert, it is almost glass like or grainless. This top layer is rarely more than 2 inches thick and hard to find. The coarser layers are 6 to 12 inches thick and more common. Ancient men pursued the fine grain quartzite to make their arrowheads. This is some Alabama quartzite from a particular location stained by some type of exotic metal salts: That is stunning material!! |
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Post by chris1956 on Jun 25, 2024 13:07:01 GMT -5
jamesp, that chertish material is great! Looks like some of the ones in your earlier polished photos may be that kind.
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jamesp
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Member since October 2012
Posts: 36,642
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Post by jamesp on Jun 25, 2024 13:11:41 GMT -5
Must agree @hplcman. It is found in a very poorly managed National Forest. Great location. Stupid me thought it was petrified wood. But look at the photos, it looks like wood dang it. www.flickr.com/photos/67205364@N06/albums/72177720299313846/jamesp, that chertish material is great! Looks like some of the ones in your earlier polished photos may be that kind. Yes, I made an error in ID on this particular location Chris. This is a rare quartzite with a peculiar name, can't remember. A young Auburn geologist straightened me out. ah, Hollis quartzite en situ  It is a complicated rock. I believe it gets its color from pyrite. Very technical article: www.aimspress.com/fileOther/PDF/geosciences/geosci-05-03-645.pdf |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,642
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Post by jamesp on Jun 25, 2024 13:33:57 GMT -5
jamesp, that chertish material is great! Looks like some of the ones in your earlier polished photos may be that kind. Yes, I was collecting quartzite about 15 miles downstream from the Hollis vein. Kept finding a Hollis pebble occasionally, so i headed upstream taking samples. Out of 15 feeder creeks and 10 trips I finally found the main feeder creek where the Hollis was feeding in. It was a cool easter egg hunt. Thought I found the unfound, but not. |
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Maybe you can post some pictures here