oosterboschite
{{Infobox mineral|name=Oosterboschite|boxwidth=|boxbgcolor=|image=Oosterboschite, Trogtalite, Cuprosklodowskite, Quartz-384834.jpg|imagesize=|alt=|caption=Black Oosterboschite with trogtalite, cuprosklodowskite, and quartz from the Musonoi mine. From the Howard Belsky collection.|category=Selenide minerals|formula={{chem2|(Pd,Cu)7Se5}}| IMAsymbol = Oos{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3 |pages=291–320|doi=10.1180/mgm.2021.43 |bibcode=2021MinM...85..291W |s2cid=235729616 |doi-access=free}}|molweight=|strunz=2.BC.10|dana=2.16.15.2|system=Orthorhombic
Unknown space group|class=|symmetry=|unit cell=a = 10.42, b = 10.6,
c = 14.43, Z = 8|color=|colour=Creamy yellow-white|habit=Anhedral grains|twinning=|cleavage=|fracture=|tenacity=|mohs=5|luster=Metallic|streak=Black|diaphaneity=Opaque|gravity=|density=8.48 (calculated)|polish=|opticalprop=|refractive=|birefringence=|pleochroism=|2V=|dispersion=|extinction=|length fast/slow=|fluorescence=None|absorption=|melt=|fusibility=|diagnostic=|solubility=Insoluble|impurities=|alteration=|other=|prop1=|prop1text=|references={{ref|1}}{{ref|2}}{{ref|3}}{{ref|4}}|var1=|var1text=|var2=|var2text=|var3=|var3text=|var4=|var4text=|var5=|var5text=|var6=|var6text=}}
Oosterboschite is a rare selenide mineral with the formula {{chem2|(Pd,Cu)7Se5}}.{{Cite web|url=http://www.mindat.org/min-3002.html|title=Oosterboschite: Oosterboschite mineral information and data.|website=www.mindat.org|access-date=2017-01-13}} It crystallises in the orthorhombic crystal system. It has a creamy yellow colour and a Moh's hardness of 5.{{Cite journal|last=Zdenek Johan, Paul Picot, Roland Pierrot, Theodore Verbeek|year=1972|title=Oosterboschite|url=http://www.minsocam.org/ammin/AM57/AM57_1552.pdf|journal=American Mineralogist|volume=57|pages=1553}} It is often found as grains with no clear shape.{{Cite web|url=http://www.webmineral.com/data/Oosterboschite.shtml#.WHjiPxsrK00|title=Oosterboschite Mineral Data|last=Barthelmy|first=Dave|website=www.webmineral.com|access-date=2017-01-13}} The crystals are opaque and often no bigger than 0.4 mm.
Occurrence
The mineral was approved by the IMA in 1970, after being discovered in the Musonoi Cu–Co mine, near Kolwezi, Katanga Province, Congo. It was later also discovered at the Copper Hills prospect, East Pilbara, Australia, and at Hope’s Nose, Torquay, Devon, England.{{Cite web|url=http://www.handbookofmineralogy.org/pdfs/oosterboschite.pdf|title=Oosterboschite|website=Handbook of Mineralogy}} It is often found in the oxidation zones of the mines, together with verbeekite, trogtalite, selenian digenite, covellite, gold, and chrisstanleyite. It was named after Robert Oosterbosch, a Belgian mining engineer that was very active in the Katanga region, where the type locality is also located.