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This study tries to understand them and the question was asked: did Inca builders have access to very acid mud? They did, and used the acid mud from their mines, which generated sulphuric acid through bacterial oxidation of pyrite (fools gold). It reaches an acidity of up to pH = 0.5, which is 10
4
times more acid than humic acid which is known to weather silica containing rocks via silica gel to the clay mineral kaolin. This acid mud allowed dissolving and softening the rock material superficially to a viscoelastic silica gel. The process could be further enhanced more than tenfold by addition of (oxalic acid containing) plant sap, [www.academia.edu]

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Subject Views Written By Posted
The Stones of S. America, a plant, concrete, Giza 631 W_C_Sally 09-Jul-07 08:09
Re: The Stones of S. America, a plant, concrete, Giza 156 Citizen Attorney 10-Jul-07 01:48
Re: The Stones of S. America, a plant, concrete, Giza 168 W_C_Sally 10-Jul-07 02:15
Re: The Stones of S. America, a plant, concrete, Giza 164 Dale Robert Lerch 10-Jul-07 08:03
Re: The Stones of S. America, a plant, concrete, Giza 198 Nolondil 10-Jul-07 20:30
Re: The Stones of S. America, a plant, concrete, Giza 203 W_C_Sally 10-Jul-07 23:16
Re: The Stones of S. America, a plant, concrete, Giza 194 Archae Solenhofen 11-Jul-07 03:46
Re: The Stones of S. America, a plant, concrete, Giza 172 W_C_Sally 11-Jul-07 05:06
Re: The Stones of S. America, a plant, concrete, Giza 185 Archae Solenhofen 11-Jul-07 06:26
Re: The Stones of S. America, a plant, concrete, Giza 169 whitey 13-Jul-07 15:14
Making Cements with Plant Extracts 224 michael seabrook 10-Jul-07 19:31
Re: Making Cements with Plant Extracts 159 W_C_Sally 10-Jul-07 23:19
Re: Making Cements with Plant Extracts 233 michael seabrook 12-Aug-07 09:45
Raises an interesting question, what do you put such a subtance into: 166 W_C_Sally 14-Aug-07 00:45
Re: Raises an interesting question, what do you put such a subtance into: 232 michael seabrook 15-Aug-07 19:50
Re: Making Cements with Plant Extracts 233 michael seabrook 03-Mar-08 15:35
Re: Making Cements with Plant Extracts 172 W_C_Sally 04-Mar-08 06:17
Re: Making Cements with Plant Extracts 195 michael seabrook 04-Mar-08 12:18
Re: Making Cements with Plant Extracts 156 W_C_Sally 05-Mar-08 07:11
Re: Making Cements with Plant Extracts 195 Nolondil 04-Mar-08 19:26
Re: Making Cements with Plant Extracts 147 W_C_Sally 05-Mar-08 07:16
Re: Making Crsytal skulls with Plant Extracts 163 michael seabrook 27-Mar-08 14:17
Growing Crsytal skulls -- Laser cutting lenses? 174 W_C_Sally 29-Mar-08 09:11
Re: Growing Crsytal skulls -- Laser cutting lenses? 184 michael seabrook 29-Mar-08 18:26
Re: Growing Crsytal skulls -- Laser cutting lenses? 172 W_C_Sally 30-Mar-08 05:07
Re: Growing Crsytal skulls -- Laser cutting lenses? 190 michael seabrook 02-Apr-08 13:41
Re: Making Cements with Plant Extracts 191 michael seabrook 23-Feb-19 20:47


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