Opal Cone

{{Short description|Mountain in British Columbia, Canada}}

{{Infobox mountain

| name = Opal Cone

| photo = Elfin_Lakes%2C_Opal_Cone.jpg

| photo_caption =

| map = British Columbia

| map_caption = Location in British Columbia

| mapframe = yes

| mapframe-zoom = 8

| mapframe-caption = Interactive map of Opal Cone

| elevation_m = 1,736

| elevation_ref =

| prominence_m = 86

| prominence_ref =

| location = Garibaldi Park, British Columbia, Canada

| district = New Westminster Land District

| range = Garibaldi Ranges

| coordinates = {{coord|49|49|38.0|N|122|58|16.0|W|type:mountain_region:CA|display=inline,title}}

| topo_maker =NTS

| topo_map = {{Canada NTS Map Sheet|92|G|15}}

| type = Cinder cone

| age = Holocene

| volcanic_arc = Canadian Cascade Arc

| volcanic_belt = Garibaldi Volcanic Belt

| last_eruption = 9300 BP

| first_ascent =

| easiest_route =

}}

Opal Cone is a cinder cone located on the southeast flank of Mount Garibaldi in the Coast Mountains of British Columbia, Canada. It is the source of a {{convert|15|km|mi|sigfig=1|abbr=on}} long broad dacite lava flow with prominent wrinkled ridges. The lava flow is unusually long for a silicic lava flow.

Opal Cone is a member of the Cascade Volcanoes, but it is located in the Garibaldi Ranges in the Coast Mountains and not in the Cascade Range proper.