IOM from particle A0108_61 | GhoSST

Step	Chronology	Date	Type	Process	Changes
#1	before layer formation	2022-01-01	chemical	Ultrapure water (Milli-Q water, 18.2 M $\omega$ ) and CH3OH:CH3Cl (2/1 v/v) leaching sequences were applied to extract soluble organic molecules (SOM)	removal of soluble organic molecules
#2	before layer formation	2022-01-01	chemical	HCl 6N was used to remove carbonates, sulfides (pyrrhotite and pentlandite) and other minerals, as one step of 2 h, followed by ultrapure water rinsing and a second step overnight.	removal of minerals
#3	before layer formation	2022-01-01	chemical	A similar sequence with HF(48%):HCl(37%) (2/1 v/v) was run, followed by a short HCl 6N sequence (2 h), to remove any cations that might subsequently react with F- to form insoluble fluorides.	removal of cations
#4	before layer formation	2022-01-01	chemical	The sample was rinsed again with ultrapure water and CH3OH:CH3Cl (2/1 v/v), for removing encaged free molecules.	removing of free molecules
#5	before layer formation	2022-01-01	thermal	After having purged the remaining reagents, the sample holder was dismounted and the filter was dried.	removal of reagents and water => dried IOM
#6	during layer formation	2022-01-01	mechanical	Grains pressed between two diamond windows	IOM grains crushed down to a thickness of about 10 microns