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'''Quartz''' or '''PJX1-8''' was a crystalline [[mineral]] abundant on the [[planet]] [[Earth]] but rarer elsewhere. ([[TV]]: ''[[The Pirate Planet]]'')
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'''Quartz''' or '''PJX1-8''' was a [[crystal]]line [[mineral]] abundant on the [[planet]] [[Earth]], but rarer elsewhere. ([[TV]]: ''[[The Pirate Planet (TV story)|The Pirate Planet]]'')


The [[Tenth Doctor]] explained that its name was derived from the [[German language|German]] word "quarz," which originated from the Slavic meaning for "hard." ([[PROSE]]: ''[[The Bog Warrior (short story)|The Bog Warrior]]'')
The [[Tenth Doctor]] explained that its name was derived from the [[German language|German]] word "quarz," which originated from the Slavic meaning for "hard". ([[PROSE]]: ''[[The Bog Warrior (short story)|The Bog Warrior]]'')


Quartz was frequently used for decorative purposes but its [[Electricity|electrical]] properties made it valuable in electronics. It was often used as a component of [[clock]]s. ([[TV]]: ''[[The Sontaran Experiment]]'') Quartz arranged in regular patterns within rocks could form circuit boards. ([[PROSE]]: ''[[The Deviant Strain]]'')
Quartz was frequently used for decorative purposes but its [[electricity|electrical]] properties made it valuable in electronics. It was often used as a component of [[clock]]s. ([[TV]]: ''[[The Sontaran Experiment (TV story)|The Sontaran Experiment]]'') Quartz arranged in regular patterns within rocks could form circuit boards. ([[PROSE]]: ''[[The Deviant Strain (novel)|The Deviant Strain]]'') The [[Twelfth Doctor]] once explained that quartz generates electricity under pressure due to its chemical properties. ([[COMIC]]: ''[[The Body Electric (comic story)|The Body Electric]]'') The [[First Monk]]'s wristwatch was made of quartz. ([[PROSE]]: ''[[The Time Meddler (novelisation)|The Time Meddler]]'')
 
In [[2013]], [[Eldrad]]'s presence in [[Ambermouth]] prompted the growth of quartz to the point where the water in the harbour was solidified. [[Bird]] and [[fish]] populations fell dramatically as they succumbed to infections. The local community, as well as the [[Fifth Doctor]], [[Nyssa]] and [[Turlough]], were all infected. This resulted in the hardening of their skin as it became covered in the crystals, with later stages seeing their arms become weaponised. After [[Eldrad's ring]] was destroyed, along with two incarnations of Eldrad, the crystals receded. ([[AUDIO]]: ''[[Eldrad Must Die! (audio story)|Eldrad Must Die!]]'')


== Notable uses ==
Quartz eyes were set from behind in the faces of the [[Cave of Five Hundred Eyes]] in [[China]]. They reflected light to give the appearance of movement but could also be removed to look through. ([[TV]]: ''[[Marco Polo (TV story)|Marco Polo]]'')
Quartz eyes were set from behind in the faces of the [[Cave of Five Hundred Eyes]] in [[China]]. They reflected light to give the appearance of movement but could also be removed to look through. ([[TV]]: ''[[Marco Polo (TV story)|Marco Polo]]'')


The first [[Dalek Emperor]], upon taking the title, ordered the gathering of quartz for the creation of his special casing. ([[COMIC]]: ''[[Genesis of Evil]]'')
The first [[Dalek Emperor]], upon taking the title, ordered the gathering of quartz for the creation of his special casing. ([[COMIC]]: ''[[Genesis of Evil (comic story)|Genesis of Evil]]'')


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[[Category:Minerals]]
[[Category:Crystals]]
[[Category:Crystals]]
[[Category:Minerals from the real world]]

Latest revision as of 23:57, 14 January 2023

Quartz

Quartz or PJX1-8 was a crystalline mineral abundant on the planet Earth, but rarer elsewhere. (TV: The Pirate Planet)

The Tenth Doctor explained that its name was derived from the German word "quarz," which originated from the Slavic meaning for "hard". (PROSE: The Bog Warrior)

Quartz was frequently used for decorative purposes but its electrical properties made it valuable in electronics. It was often used as a component of clocks. (TV: The Sontaran Experiment) Quartz arranged in regular patterns within rocks could form circuit boards. (PROSE: The Deviant Strain) The Twelfth Doctor once explained that quartz generates electricity under pressure due to its chemical properties. (COMIC: The Body Electric) The First Monk's wristwatch was made of quartz. (PROSE: The Time Meddler)

In 2013, Eldrad's presence in Ambermouth prompted the growth of quartz to the point where the water in the harbour was solidified. Bird and fish populations fell dramatically as they succumbed to infections. The local community, as well as the Fifth Doctor, Nyssa and Turlough, were all infected. This resulted in the hardening of their skin as it became covered in the crystals, with later stages seeing their arms become weaponised. After Eldrad's ring was destroyed, along with two incarnations of Eldrad, the crystals receded. (AUDIO: Eldrad Must Die!)

Quartz eyes were set from behind in the faces of the Cave of Five Hundred Eyes in China. They reflected light to give the appearance of movement but could also be removed to look through. (TV: Marco Polo)

The first Dalek Emperor, upon taking the title, ordered the gathering of quartz for the creation of his special casing. (COMIC: Genesis of Evil)