RemixIconEx.User.account_circle

You're seeing just the function account_circle, go back to RemixIconEx.User module for more information.
Link to this function

account_circle(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.User.account_circle()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M12 22C6.477 22 2 17.523 2 12S6.477 2 12 2s10 4.477 10 10-4.477 10-10 10zm-4.987-3.744A7.966 7.966 0 0 0 12 20c1.97 0 3.773-.712 5.167-1.892A6.979 6.979 0 0 0 12.16 16a6.981 6.981 0 0 0-5.147 2.256zM5.616 16.82A8.975 8.975 0 0 1 12.16 14a8.972 8.972 0 0 1 6.362 2.634 8 8 0 1 0-12.906.187zM12 13a4 4 0 1 1 0-8 4 4 0 0 1 0 8zm0-2a2 2 0 1 0 0-4 2 2 0 0 0 0 4z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}