Rarest Metamorphic Rock — All 31 Answers Ranked by Rarity
31 answers are accepted for “Name a metamorphic rock”. Fruchtschiefer is the rarest metamorphic rock in this ranking, with 234 monthly Wikipedia views (rarity 1.000, Legendary). Halleflinta is the second-rarest with 500 monthly Wikipedia views, 2.14× the figure for Fruchtschiefer. Lapis lazuli is the most common metamorphic rock in this ranking, with 532,700 monthly Wikipedia views, 2,276× the figure for the rarest. Combined monthly Wikipedia views across the 31 answers: 1,710,305. Fruchtschiefer is under 0.1% of that total. 7 answers are Epic or Legendary: Fruchtschiefer (Legendary), Halleflinta (Legendary), Itabirite (Legendary), and 4 more.
Quick answer
Monthly English Wikipedia pageviews. Source: Wikidata + Wikipedia pageviews (2026-10).
Ranked answers
| Rank | Answer | Tier | Rarity | Monthly Wikipedia views |
|---|---|---|---|---|
| 1 | Fruchtschiefer on Wikipedia | Legendary | 1.000 | 234 |
| 2 | Halleflinta on Wikipedia | Legendary | 0.967 | 500 |
| 3 | Itabirite on Wikipedia | Legendary | 0.933 | 1,677 |
| 4 | Fenite on Wikipedia | Epic | 0.900 | 1,678 |
| 5 | Epidosite on Wikipedia | Epic | 0.867 | 1,690 |
| 6 | Granofels on Wikipedia | Epic | 0.833 | 1,771 |
| 7 | Calc–silicate rock on Wikipedia | Epic | 0.800 | 1,971 |
| 8 | Tectonite on Wikipedia | Rare | 0.767 | 2,562 |
| 9 | Metavolcanic rock on Wikipedia | Rare | 0.733 | 2,959 |
| 10 | Pseudotachylyte on Wikipedia | Rare | 0.700 | 2,988 |
| 11 | Khondalite on Wikipedia | Rare | 0.667 | 3,529 |
| 12 | Jadeitite on Wikipedia | Rare | 0.633 | 3,605 |
| 13 | Metasedimentary rock on Wikipedia | Rare | 0.600 | 4,176 |
| 14 | Listwanite on Wikipedia | Uncommon | 0.567 | 5,509 |
| 15 | Nuummite on Wikipedia | Uncommon | 0.533 | 6,392 |
| 16 | Granulite on Wikipedia | Uncommon | 0.500 | 7,120 |
| 17 | Anyolite on Wikipedia | Uncommon | 0.467 | 7,437 |
| 18 | Suevite on Wikipedia | Uncommon | 0.433 | 9,814 |
| 19 | Eclogite on Wikipedia | Uncommon | 0.400 | 13,439 |
| 20 | Amphibolite on Wikipedia | Familiar | 0.367 | 20,888 |
| 21 | Unakite on Wikipedia | Familiar | 0.333 | 24,110 |
| 22 | Emery on Wikipedia | Familiar | 0.300 | 32,730 |
| 23 | Tektite on Wikipedia | Familiar | 0.267 | 73,980 |
| 24 | Serpentinite on Wikipedia | Familiar | 0.233 | 76,065 |
| 25 | Quartzite on Wikipedia | Common | 0.200 | 83,764 |
| 26 | Schist on Wikipedia | Common | 0.167 | 86,024 |
| 27 | Fulgurite on Wikipedia | Common | 0.133 | 101,205 |
| 28 | Soapstone on Wikipedia | Common | 0.100 | 113,340 |
| 29 | Marble on Wikipedia | Common | 0.067 | 189,550 |
| 30 | Jade on Wikipedia | Common | 0.033 | 296,898 |
| 31 | Lapis lazuli on Wikipedia | Common | 0.000 | 532,700 |
FAQ
What is the rarest metamorphic rock?
Fruchtschiefer is the rarest metamorphic rock in this ranking, with 234 monthly Wikipedia views (rarity 1.000, Legendary).
How many metamorphic rocks are there?
There are 31 metamorphic rocks in this ranking, from Fruchtschiefer (rarest) to Lapis lazuli (most common).
What is the most common metamorphic rock?
Lapis lazuli is the most common metamorphic rock in this ranking, with 532,700 monthly Wikipedia views (Common).
Play
Unlimited mode uses this prompt. A rarer correct answer scores more.
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Sources
Recorded source: Wikidata + Wikipedia pageviews (2026-10). The answer list is compiled from Wikidata (CC0), and the view counts are monthly English Wikipedia pageviews. Rarity is the percentile of the popularity figure inside this prompt: 1 is the rarest and 0 is the most common. Linked names open the English Wikipedia article stored on that answer.