About Scioly.rocks

Practice mineral and rock identification with 25,279 real images.

What This Site Does

Scioly.rocks is a fast practice tool for Science Olympiad Rocks & Minerals competitors. You’ll see a mineral or rock photo, type your guess, and get instant feedback.

The large image pool minimizes memorization and builds identification skills.

Image Library

  • Minerals: 22,914 images across 86 minerals (about 266 per mineral on average).
  • Rocks: 2,365 images across 44 rock types (about 54 per rock on average).
  • Total: 25,279 images.

How to Practice

  1. Pick a mode: Full List, Regionals, Starter, or Rocks.
  2. Look closely at the photo, type the mineral or rock name, and press Enter.
  3. The result overlay shows the answer plus common facts to help you internalize core properties.
  4. Press Enter again—or click Close—to hide the overlay and load the next photo.
  5. If you want to skip, submit a blank guess. It counts as incorrect.

Accounts & Stats

  • Guest practice: your totals stay in browser cookies. Refreshing, switching pages, or closing the tab won’t erase the current day.
  • Google sign-in: syncs your history so per-mineral accuracy, streak, and daily activity follow you across devices.
  • Signing in for the first time imports any guest progress on that browser so you don’t lose earlier work.
  • The Stats page shows overall numbers, per-mineral accuracy, daily bars in Pacific Time, and a streak indicator.

Daily Totals & Streaks

  • "Answered today" and "Correct today" track your progress for the Pacific Time calendar day.
  • Streaks increase when you log at least one answer on consecutive days.

Starter Mode

Starter mode is designed for people starting out with ID. Each mineral in Starter mode has only 10 hand-selected images that showcase key identification features without overwhelming variety.

  • Recurring images help get the hang of mineral ID when starting out.
  • Great for building confidence before moving to the full image library.
  • Only shows minerals on the Regionals list
  • Stats track separately—see your progress in Starter mode vs. other modes on the Stats page.

What accuracy should I expect?

Many images are intentionally challenging. Most users score between 10% and 60%; The net average on scioly.rocks is around 33%. Don't be discouraged—the goal is steady improvement and stronger ID skills.