18 | White crystalline powder | Carbon, oxygen, barium | Witherite ICDD PDF 71-2394 | Witherite, BaCO3 |
19 | White crystalline powder | Carbon, oxygen, barium, calcium | Cobaltocalcite ICDD PDF 15-0285 | Baritocalcite, BaCa(CO3)2 |
20 | White crystalline powder | Strontium, oxygen, sulfur | Celestine ICDD PDF 05-0593 | Celestine, SrSO4 |
21 | White crystalline powder | Strontium, oxygen, carbon | Strontianite ICDD PDF 71-2393 | Strontianite, SrCO3 |
22 | White crystalline powder with traces of cleavage | Fluorine and calcium | Fluorite ICDD PDF 70-1469 | Fluorite, CaF2 |
23 | White fine powder | Calcium, oxygen and sulfur | Gypsum ICDD PDF 70-1469 | Gypsum, CaSO4・2H2O |
24 | Glassy yellowish and bluish fragments, conchoidal fracture | Phosphor, oxygen, calcium, fluorine, a small amount of chlorine | Fluoroapatite ICDD PDF 71-0880 | Fluorapatite, Ca5(PO4)3F |
25 | Missing sample |
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26 | White crystalline powder | Calcium, carbon, oxygen with minor amount of magnesium | Calcite ICDD PDF 89-1304 | Calcite, CaCO3 Composition is very close to pure calcite, with only 0.03% m/m of magnesium |
27 | White crystalline fragments | Silicon, calcium and oxygen, with minor iron and chromium | Wollastonite ICDD PDF 42-0547 | Wollastonite, CaSiO3 |
28 | Green crystalline fragments | Silicon, calcium, aluminum, iron and oxygen, with minor amount of sodium | Clinozoisite ICDD PDF 71-1539 | Epidote, Ca2(Fe,Al)3(SiO4)3(OH) The sample is a mixed member of the series Clinozoisite-Epidote |
29 | White greenish scales | Magnesium, silicon, oxygen and minor iron | Talc ICDD PDF 29-1493 | Talc, Mg3Si4O10(OH)2 |
30 | Missing sample |
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31 | Creamy-white powder | Calcium, carbon, oxygen and little amount of iron and manganese | Ferroan Dolomite ICDD PDF 41-0586 | Ferroan Dolomite, Ca(Fe,Mg,Mn)(CO3)2 Magnesium in dolomite is often replaced by a small amount of iron and manganese |
32 | Whitish powder | Carbon and oxygen | Phenolphthalein ICDD PDF 51-2358 | Phenolphthalein, C20H14O4 Phenolphthalein is an organic pH-indicator that does not match with minerals. Probably it was used as a replacement of a consumed sample |
33 | White powder | Manganese, sulfur, oxygen | Manganese sulfate hydrate ICDD PDF 33-0906 | Manganese sulfate monohydrate MnSO4・H2O May be a laboratory product |
34 | White powder | Sodium, sulfur, magnesium, oxygen | Magnesium sulfate hydrate and sodium magnesium sulfate hydrate ICDD PDF 72-1068 ICDD PDF 71-0307 | Magnesium sulfate hydrate MgSO4・6H2O Sodium magnesium sulfate hydrate Na2Mg(SO4)2・4H2O May be either a natural mineral or a laboratory product. |
35 | White crystalline powder | Aluminum, sulfur, potassium and oxygen | Alunite ICDD PDF 73-1652 | Alunite, K(Al3(OH)6(SO4)2 May be either a natural mineral or a laboratory product. |
36 | Crystalline fragments, colorless, traces of natural faces, conchoidal fracture | Silicon, oxygen, aluminum and fluorine | Topaz, aluminum fluosilicate. ICDD PDF 12-0765 | Topaz, Al2SiO4(F,OH)2 |
37 | Greyish fragments without particular features | Aluminum and oxygen with some impurities | Chrysoberyl ICDD PDF 78-0958 | Chrysoberyl, Al2BeO4 EDS did not determine the presence of beryllium, due to its low atomic mass |
38 | Hyaline yellowish fragments | Aluminum and oxygen | Corundum ICDD PDF 81-2267 | Corundum, Al2O3 |
39 | A white-grayish powder of metallic appearance | Aluminum and oxygen with impurities of copper and iron | Aluminum ICDD PDF 04-0787 | Aluminum, Al Impurities of Cu and Fe in the powder |