- Home
- Crystal systems
- Tetragonal
Tetragonal crystal system
372 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Pirquitasite | Ag₂ZnSnS₄ | — | 4.63 g/cm³ |
| Piypite | K₄Cu₄O₂(SO₄)₄·(Na,Cu)Cl | 2.5 | — |
| Plattnerite | PbO₂ | 5.5 | 9.34 g/cm³ |
| Potarite | PdHg | — | 14.41 g/cm³ |
| Powellite | CaMoO₄ | — | 4.27 g/cm³ |
| Pretulite | Sc(PO₄) | 5.0 | 3.69 g/cm³ |
| Proxitwelvefoldite | Pd₃Ni₄Te₈ | — | — |
| Przhevalskite | Pb₂(UO₂)₃(PO₄)₂(OH)₄ * 3H₂O | — | — |
| Pyrolusite | MnO₂ | — | — |
| Quadratite | AgCdAsS₃ | — | 5.31 g/cm³ |
| Radhakrishnaite | PbTe₃(Cl,S)₂ | — | — |
| Ralphcannonite | AgZn₂TlAs₂S₆ | — | — |
| Raspite | PbWO₄ | — | 8.32 g/cm³ |
| Reidite | ZrSiO₄ | — | 4.63 g/cm³ |
| Renierite | (Cu¹⁺,Zn)₁₁Fe₄(Ge⁴⁺,As⁵⁺)₂S₁₆ | — | — |
| Retgersite | NiSO₄ * 6H₂O | — | — |
| Rhodostannite | Cu₂FeSn₃S₈ | — | — |
| Richardsite | — | — | — |
| Richellite | CaFe³⁺₂(PO₄)₂(OH,F)₂ | — | — |
| Rippite | K₂(Nb,Ti)₂(Si₄O₁₂)O(O,F) | — | — |
| Roggianite | Ca₂Be(OH)₂Al₂Si₄O₁₃ * 2.₅H₂O | — | — |
| Romanorlovite | K₈Cu₆Cl₁₇(OH)₃ | — | — |
| Romarchite | SnO | — | 6.29 g/cm³ |
| Ronpetersonite | BaWO₄ | — | 6.25 g/cm³ |
| Rooseveltite | BiAsO₄ | — | 7.62 g/cm³ |
| Roquesite | CuInS₂ | — | 4.75 g/cm³ |
| Rorisite | CaFCl | — | — |
| Rosenbergite | AlF₃.3H₂O | — | — |
| Routhierite | CuTlHg₂As₂S₆ | — | — |
| Rumseyite | [Pb₂OF]Cl | — | — |
| Rutile | TiO₂ | — | 3.86 g/cm³ |
| Saccoite | — | — | — |
| Samaniite | Cu₂Fe₅Ni₂S₈ | — | — |
| Santarosaite | CuB₂O₄ | — | 4.00 g/cm³ |
| Sarcolite | Na₄Ca₁₂Al₈Si₁₂O₄₆(SiO₄,PO₄)(OH,H₂O)₄(CO₃,Cl) | — | — |
| Schafarzikite | Fe²⁺Sb³⁺₂O₄ | — | — |
| Scheelite | CaWO₄ | — | 6.10 g/cm³ |
| Schiavinatoite | (Nb,Ta)(BO₄) | — | — |
| Schreibersite | (Fe,Ni,Cr)₃P | — | — |
| Schwartzembergite | Pb²⁺₅H₂I³⁺O₆Cl₃ | — | — |
| Schwertmannite | Fe³⁺₁₆O₁₆(OH)₉.₆(SO₄)₃.₂·10H₂O | — | — |
| Selenojalpaite | Ag₃CuSe₂ | — | — |
| Sellaite | MgF₂ | — | 3.19 g/cm³ |
| Shenzhuangite | NiFeS₂ | — | — |
| Sherwoodite | Ca₄.₅AlV₁₄O₄₀·28H₂O | — | — |
| Sinjarite | CaCl₂·2H₂O | 1.5 | — |
| Skogbyite | Zr(Mg₂Mn³⁺₄)SiO₁₂ | — | — |
| Sphaerobismoite | Bi₂O₃ | — | — |
| Stankeithite | MnMnTe⁴⁺₄O₁₀ | — | — |
| Stannite | Cu₂FeSnS₄ | 4.0 | — |
| Steacyite | K₀.₃(Na,Ca)₂ThSi₈O₂₀ | — | — |
| Steiningerite | Ba₂Zr₂(Si₄O₁₂)O₂ | — | — |
| Stenhuggarite | CaFeSb(AsO₃)₂O | — | — |
| Stetindite-(Ce) | Ce(SiO₄) | — | — |
| Stishovite | SiO₂ | 9.4 | 2.63 g/cm³ |
| Stolzite | PbWO₄ | — | 8.32 g/cm³ |
| Strontiopharmacosiderite | Sr₀.₅Fe₄[(AsO₄)₃(OH)₄]·4H₂O | — | — |
| Stöfflerite | CaAl₂Si₂O₈ | — | — |
| Sugakiite | Cu(Fe,Ni)₈S₈ | — | — |
| Suseinargiuite | NaBi(MoO₄)₂ | — | — |
| Tapiolite-(Fe) | (Fe,Mn)(Ta,Nb)₂O₆ | — | — |
| Tapiolite-(Mn) | Mn²⁺Ta₂O₆ | — | — |
| Teepleite | Na₂[B(OH)₄]Cl | — | — |
| Tellurite | TeO₂ | 2.0 | — |
| Tellurohauchecornite | Ni₉BiTeS₈ | — | — |
| Tetra-auricupride | CuAu | — | 14.86 g/cm³ |
| Tetraferroplatinum | PtFe | — | 14.98 g/cm³ |
| Tetrarooseveltite | Bi(AsO₄) | — | 7.62 g/cm³ |
| Thalcusite | Tl₂Cu₃FeS₄ | — | — |
| Thalhammerite | Pd₉Ag₂Bi₂S₄ | — | — |
| Thalliomelane | — | — | — |
| Thorite | ThSiO₄ | — | 6.66 g/cm³ |
| Tillmannsite | (Ag₃Hg)(VO₄,AsO₄) | — | — |
| Tin (native) | Sn | — | — |
| Topsøeite | — | — | — |
| Torbernite | Cu(UO₂)₂(PO₄)₂·12H₂O | — | — |
| Tredouxite | NiSb₂O₆ | — | 6.61 g/cm³ |
| Trippkeite | Cu²⁺As³⁺₂O₄ | — | — |
| Trögerite | (H₃O)(UO₂)(AsO₄)·3H₂O | — | — |
| Tschernichite | CaAl₂Si₆O₁₆·8H₂O | — | — |