Rarest Igneous Rock — All 31 Answers Ranked by Rarity
31 answers are accepted for “Name an igneous rock”. Melanocratic rock is the rarest igneous rock in this ranking, with 141 monthly Wikipedia views (rarity 1.000, Legendary). Metaluminous rock is the second-rarest with 608 monthly Wikipedia views, 4.31× the figure for Melanocratic rock. Soapstone is the most common igneous rock in this ranking, with 113,340 monthly Wikipedia views, 803.8× the figure for the rarest. Combined monthly Wikipedia views across the 31 answers: 467,350. Melanocratic rock is under 0.1% of that total. 7 answers are Epic or Legendary: Melanocratic rock (Legendary), Metaluminous rock (Legendary), Teschenite (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 | Melanocratic rock on Wikipedia | Legendary | 1.000 | 141 |
| 2 | Metaluminous rock on Wikipedia | Legendary | 0.967 | 608 |
| 3 | Teschenite on Wikipedia | Legendary | 0.933 | 1,127 |
| 4 | Mangerite on Wikipedia | Epic | 0.900 | 1,179 |
| 5 | Glimmerite on Wikipedia | Epic | 0.867 | 1,208 |
| 6 | Peraluminous rock on Wikipedia | Epic | 0.833 | 1,517 |
| 7 | Peralkaline rock on Wikipedia | Epic | 0.800 | 1,645 |
| 8 | Leucitite on Wikipedia | Rare | 0.767 | 1,761 |
| 9 | Acidic rock on Wikipedia | Rare | 0.733 | 1,975 |
| 10 | Ultrapotassic igneous rocks on Wikipedia | Rare | 0.700 | 2,050 |
| 11 | Nelsonite on Wikipedia | Rare | 0.667 | 2,493 |
| 12 | Alkaline magma series on Wikipedia | Rare | 0.633 | 2,673 |
| 13 | Nephelinite on Wikipedia | Rare | 0.600 | 2,753 |
| 14 | Intermediate composition on Wikipedia | Uncommon | 0.567 | 2,958 |
| 15 | Cantera on Wikipedia | Uncommon | 0.533 | 3,451 |
| 16 | Phanerite on Wikipedia | Uncommon | 0.500 | 4,262 |
| 17 | Black granite on Wikipedia | Uncommon | 0.467 | 4,665 |
| 18 | Bowder Stone on Wikipedia | Uncommon | 0.433 | 4,782 |
| 19 | Aphanite on Wikipedia | Uncommon | 0.400 | 5,082 |
| 20 | Norite on Wikipedia | Familiar | 0.367 | 5,745 |
| 21 | Pitchstone on Wikipedia | Familiar | 0.333 | 6,330 |
| 22 | Tholeiitic magma series on Wikipedia | Familiar | 0.300 | 8,107 |
| 23 | Porphyritic on Wikipedia | Familiar | 0.267 | 11,643 |
| 24 | Greenstone on Wikipedia | Familiar | 0.233 | 14,008 |
| 25 | Ultramafic rock on Wikipedia | Common | 0.200 | 22,939 |
| 26 | Intrusive rock on Wikipedia | Common | 0.167 | 25,743 |
| 27 | Thunderegg on Wikipedia | Common | 0.133 | 34,020 |
| 28 | Volcanic glass on Wikipedia | Common | 0.100 | 34,554 |
| 29 | Volcanic rock on Wikipedia | Common | 0.067 | 43,812 |
| 30 | Porphyry on Wikipedia | Common | 0.033 | 100,779 |
| 31 | Soapstone on Wikipedia | Common | 0.000 | 113,340 |
FAQ
What is the rarest igneous rock?
Melanocratic rock is the rarest igneous rock in this ranking, with 141 monthly Wikipedia views (rarity 1.000, Legendary).
How many igneous rocks are there?
There are 31 igneous rocks in this ranking, from Melanocratic rock (rarest) to Soapstone (most common).
What is the most common igneous rock?
Soapstone is the most common igneous rock in this ranking, with 113,340 monthly Wikipedia views (Common).
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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.