40

White porcelanaceous fragments, conchoidal fracture.

Silicon, aluminum and oxygen

Beryl

ICDD PDF 84-1141

Beryl, Be₃Al₂Si₆O₁₈

EDS did not determine the presence of beryllium, due to its low atomic mass

41

Dark, blackish fragments with conchoidal fractures

Oxygen, aluminum, calcium, iron and silicon, REE elements (La, Ce, Nd)

The spectrum is probably matching the Allanite’s one

Allanite (epidote group)

(Ca,REE)₂(Fe,Al)₃(SiO₄)₃(OH)

XRPD spectrum shows a low crystallinity, probably due to a radiation damage (metamictization) of the crystalline structure

42

Yellow and dark yellow fragments, no cleavage, conchoidal fracture

Oxygen, silicon and zirconium

Zircon

ICDD PDF 83-1375

Zircon, ZrSiO₄

43

Blackish, dark fragments with no distinctive features

Oxygen, carbon, fluorine and REE elements (La, Ce, Nd)

Parasite

ICDD PDF 47-1832

and Bastnaesite

ICDD PDF 11-0340

Bastnaesite, CeCO₃F

Parisite, Ca(Ce,La)₂F₂(CO₃)₃

Probably a natural blend of the two minerals, used as standard for REE carbonates.

44

Greyish-green fragments

Phosphor, oxygen, thorium, calcium, REE elements (Ce, La, Nd)

Neodymium phosphate

ICDD PDF 83-0654

Monazite, (Ce,REE)PO₄

45

Black fragments

Manganese, sulphur

Alabandite

ICDD PDF 88-2223

Alabandite, (MnS)

46

Black fragments, with fibrous appearance. Black streak

Manganese and oxygen

Pyrolusite

ICDD PDF 72-1984

Pyrolusite, MnO₂

47

Pink fragments with cleavage traces, low hardness

Manganese, oxygen, carbon and a minor amount of calcium

Rhodochrosite

ICDD PDF 44-1472

Rhodochrosite, MnCO₃

48

Pink fragments without any cleavage

Silicon, oxygen, manganese and minor amount of calcium and magnesium

Rhodonite

ICDD PDF 83-2212 and Bustamite

ICDD PDF 85-1034

Rhodonite (magnesian), (Mn,Mg)SiO₃

Bustamite, (Ca,Mn)SiO₃

Probably a natural mix of the two Mn-rich silicates Rhodonite and Bustamite

49

Sand

Oxygen, silicon, sodium, potassium and calcium

Quartz

ICDD PDF 86-1629

and Albite

ICDD PDF 09-0466

Quartz, sodic feldspar, potassic feldspar

Sand, mainly composed of Quartz and Feldspars.

50

Intense yellow fragments, vitreous, with some cleavage

Zinc, sulphur and iron

Pyrrothite

ICDD PDF 76-2308 and Sphalerite

ICDD PDF 77-2100

Pyrrothite (Fe₇S₈)

Sphalerite (ZnS)

A mix of iron and zinc sulphides

51

Pale yellowish powder, with some metallic lustre

Iron, sulphur and oxygen

Pyrite

ICDD PDF 89-3057

Pyrite, FeS₂

The sample was probably made of crushed Pyrite, strongly oxidized during a century.

52

Black fragments

Mainly iron and oxygen, some aluminum and calcium in small portions

Magnetite

ICDD PDF 88-0315

Magnetite, Fe₃O₄

Impurities of silicates

53

Dark reddish fragments with fibrous appearance

Iron and oxygen, minor amount of aluminum and silicon

Hematite

ICDD PDF 89-0599

Hematite, Fe₂O₃

54

Reddish-yellowish dark fragments, fibrous appearance

Oxygen and iron

Goethite

ICDD PDF 29-0713

Goethite, FeO(OH)

55

Rhombohedrical shaped fragment, dark yellow

Iron, oxygen and carbon

Siderite

ICDD PDF 83-1764

Siderite, FeCO₃

56

Grey-greenish fragments with conchoidal fracture

Iron, phosphor, oxygen and minor amount of sodium, aluminium.

Natrodufrenite

ICDD PDF 35-0570

Vivianite, Fe₃(PO₄)₂・8H₂O

The sample was probably vivianite, altered in Natrodufrenite