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User:Rfl

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Penrose Tribar
Penrose Tribar

Rafał Pocztarski

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Administrator of the English Wikipedia since 2004 (original nomination)

My Contributions: All · Articles · Talk · User talk · Wiki · Wiki talk · Page Deletions · Current rights




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Shortcuts

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Rules

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Simplified ruleset: WP:SIMPLE · Policies and guidelines: WP:PG WP:POLICY WP:GUIDELINE · Five pillars: WP:FIVE WP:5P WP:FIVEPILLARS

Neutral point of view: WP:NPOV WP:NPV · Verifiability: WP:V WP:VERIFY WP:SOURCE · No original research: WP:OR WP:NOR WP:ORIGINAL

What Wikipedia is not: WP:! WP:NOT WP:WWIN

Sources

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Primary, secondary and tertiary sources: WP:PSTS WP:PRIMARY WP:SECONDARY Third-party sources: WP:THIRDPARTY WP:3PARTY WP:INDEPENDENT

Identifying reliable sources: WP:IRS WP:RS WP:RELY WP:RELIABLE WP:RELIABLESOURCES · Wikipedia:Notability: WP:N WP:NN WP:NOTE

Abuse

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Vandalism: WP:VAN WP:VAND WP:VNDL WP:VANDAL · Warning templates · Administrator intervention against vandalism: WP:AIV WP:AIAV WP:RVAN

Abuse response: WP:ABUSE WP:AbRep · Cleaning up vandalism: WP:CUV · WikiProject Vandalism studies: WP:WPVS

Requests for page protection: WP:RFPP WP:RFP WP:RPP WP:PADLOCK · Protection policy: WP:PP WP:PROTECT

Misc

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Special:WhatLinksHere

Picture of the day

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Featured pictures · visible · candidates

Pyromorphite
Pyromorphite is a mineral species composed of lead chlorophosphate: Pb5(PO4)3Cl, sometimes occurring in sufficient abundance to be mined as an ore of lead. First distinguished chemically by Martin Heinrich Klaproth in 1784, it was named pyromorphite by Johann Friedrich Ludwig Hausmann in 1813. It is usually green, yellow or brown in color, with a resinous lustre. Crystals are common and have the form of a hexagonal prism terminated by the basal planes, sometimes combined with narrow faces of a hexagonal pyramid. Other forms include crystals with a barrel-like curvature and globular or reniform masses. Pyromorphite is part of the apatite group of minerals and bears a close resemblance physically and chemically with two other minerals, mimetite and vanadinite. This focus-stacked photograph, merged from 26 separate images, shows a sample of pyromorphite extracted from the Resuperferolitica Mine in Santa Eufemia, in the Spanish province of Córdoba. The sample measures 3.5 cm × 3.0 cm × 1.5 cm (1.38 in × 1.18 in × 0.59 in).Photograph credit: David Ifar

Selected anniversaries

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November 9

People walking through Checkpoint Charlie in Berlin
People walking through Checkpoint Charlie in Berlin
More anniversaries:

In the news

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Current events:

Donald Trump in 2017
Donald Trump

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