Laboratory Analysis Report: Sample Group 2

This document, page 6 of a larger report, details the laboratory examination of four physical samples (collectively referred to as 'prov 2') that were recovered at the same time as 'prov 1'. The samples were analyzed through visual inspection and, in the case of sample 2:1, qualitative spectral analysis. Sample 2:1 is described as a pumice-like material, yellow-white with gray tints, weighing approximately 20 grams, and containing pores ranging from microscopic to 3-4 mm. Sample 2:2 is gray-black, porous, and harder than 2:1, with some lighter and brick-colored sections and fine surface cracks. Sample 2:3 weighs approximately 5 grams and has a slag-like appearance, while sample 2:4 is a small 2-gram slag-like piece ranging from dark violet to brick red. All four samples share the characteristic of floating on water. The report notes that all samples exhibit worn surfaces and contain sand grains within their pores, indicating they were subjected to long-term abrasion in beach sand. Spectral analysis of sample 2:1 confirmed it consists primarily of magnesium, aluminum, and silicon, with a higher concentration of magnesium, leading to the conclusion that it is a naturally occurring magnesium-aluminum silicate. The other samples in this group were not analyzed spectrally because they were deemed highly similar to samples in group 4, which had already undergone closer examination.