1. Mineralogical exhibition of Mátra Museum

2. Minerals of the Parádfürdő mineralization

4. 1. Tennantite (Cu 12 [S(As 3 ) 4 ])

5. Tennantite – Cu 12 [S(As 3 ) 4 ] Class: sulfides Crystal system: cubic Characteristic crystal form: tetrahedral Hardness: 3,5-4,5 Cleavage/Fracture: no cleavage/uneven fracture Colour: steel-grey, black Streak colour: reddish grey Glance: metallic lustre Locality: Parádfürdő

6. 2. Pyrite (FeS 2 )

7. Pyrite – FeS 2 Class: sulfides Crystal system: cubic Characteristic crystal form: hexahedral, octahedral Hardness: 6 – 6,5 Cleavage/Fracture: poor cleavage/conchoidal, uneven fracture Colour: light copper-yellow Streak colour: greenish black, bownish black Glance: metallic lustre Locality: Parádfürdő

8. 3. Quartz (SiO 2 )

9. Quartz – SiO 2 Class: Oxides and Hidroxides Crystal system: trigonal Characteristic crystal form: prismatic, rombohedral Hardness: 7 Cleavage/Fracture: no cleavage/conchoidal fracture Colour: colourless Streak colour: white Glance: glassy, silky lustre, unglazed Locality: Parádfürdő

10. 4. Azurite (Cu 3 (CO 3 ) 2 (OH) 2 )

11. Azurite – Cu 3 [OH∙CO 3 ] 2 Class: Carbonates, Nitrates Crystal system: monoclinic Characteristic crystal form: tabular, prismatic Hardness: 3,5 Cleavage/Fracture: excellent cleavage/conchoidal fracture Colour: blue Streak colour: blue Glance: glassy lustre Locality: Parádfürdő

12. 5. Halotrichite (FeAl 2 (SO 4 ) 4 ∙22H 2 O)

13. Halotrichite – FeAl 2 (SO 4 ) 4 ∙22H 2 O Class: Sulfates Crystal system: monoclinic Characteristic crystal form: fibrous Hardness: 1,5 Cleavage/Fracture: good cleavage/uneven fracture Colour: white, yellowish Streak colour: white Glance: glassy lustre Locality: Parádfürdő

14. 6. Wavellite (Al 3 (PO 4 ) 2 (OH) 3 ∙5H 2 O

15. Wavellite – Al 3 (PO 4 ) 2 (OH) 3 ∙5H 2 O Class: Phosphates Crystal system: rhombic Characteristic crystal form: prismatic Hardness: 3-4 Cleavage/Fracture: good cleavage/uneven fracture Colour: grey, yellowish Streak colour: colourless, white Glance: pearly lustre Locality: Parádfürdő