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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 531 W_C_Sally 09-Jul-07 08:09
Re: The Stones of S. America, a plant, concrete, Giza 121 Citizen Attorney 10-Jul-07 01:48
Re: The Stones of S. America, a plant, concrete, Giza 132 W_C_Sally 10-Jul-07 02:15
Re: The Stones of S. America, a plant, concrete, Giza 131 Dale Robert Lerch 10-Jul-07 08:03
Re: The Stones of S. America, a plant, concrete, Giza 161 Nolondil 10-Jul-07 20:30
Re: The Stones of S. America, a plant, concrete, Giza 165 W_C_Sally 10-Jul-07 23:16
Re: The Stones of S. America, a plant, concrete, Giza 161 Archae Solenhofen 11-Jul-07 03:46
Re: The Stones of S. America, a plant, concrete, Giza 135 W_C_Sally 11-Jul-07 05:06
Re: The Stones of S. America, a plant, concrete, Giza 136 Archae Solenhofen 11-Jul-07 06:26
Re: The Stones of S. America, a plant, concrete, Giza 135 whitey 13-Jul-07 15:14
Making Cements with Plant Extracts 190 michael seabrook 10-Jul-07 19:31
Re: Making Cements with Plant Extracts 123 W_C_Sally 10-Jul-07 23:19
Re: Making Cements with Plant Extracts 186 michael seabrook 12-Aug-07 09:45
Raises an interesting question, what do you put such a subtance into: 131 W_C_Sally 14-Aug-07 00:45
Re: Raises an interesting question, what do you put such a subtance into: 181 michael seabrook 15-Aug-07 19:50
Re: Making Cements with Plant Extracts 199 michael seabrook 03-Mar-08 15:35
Re: Making Cements with Plant Extracts 140 W_C_Sally 04-Mar-08 06:17
Re: Making Cements with Plant Extracts 150 michael seabrook 04-Mar-08 12:18
Re: Making Cements with Plant Extracts 116 W_C_Sally 05-Mar-08 07:11
Re: Making Cements with Plant Extracts 149 Nolondil 04-Mar-08 19:26
Re: Making Cements with Plant Extracts 116 W_C_Sally 05-Mar-08 07:16
Re: Making Crsytal skulls with Plant Extracts 124 michael seabrook 27-Mar-08 14:17
Growing Crsytal skulls -- Laser cutting lenses? 137 W_C_Sally 29-Mar-08 09:11
Re: Growing Crsytal skulls -- Laser cutting lenses? 138 michael seabrook 29-Mar-08 18:26
Re: Growing Crsytal skulls -- Laser cutting lenses? 144 W_C_Sally 30-Mar-08 05:07
Re: Growing Crsytal skulls -- Laser cutting lenses? 145 michael seabrook 02-Apr-08 13:41
Re: Making Cements with Plant Extracts 118 michael seabrook 23-Feb-19 20:47


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