Schema is not defined (Mongoose)

I am getting Schema not defined for Schema.Types options

const mongoose = require('mongoose');

const mineralSchema = mongoose.Schema({
    larry: Schema.Types.Mixed,
    specimen: {
        type:        {type: String, lowercase: true},                // thumbnail, miniature, display
        matrix:      {type: String, lowercase: true},              
        color:       {type: String, lowercase: true},
        location:    {type: String, lowercase: true},
        mine:        {type: String, lowercase: true},
        pocket:      {type: String, lowercase: true},              
        size:        Schema.Types.Mixed, 
        weight:      Number,
        comments:    Schema.Types.Mixed,
        description: Schema.Types.Mixed,
        purch_date:  {type: Date, default: Date.now },
        purch_price: Number,
        supplier:    Schema.Types.Mixed,
        images:      String
    }
});

I thought maybe this was a scope issue due to nested objects, but even larry is having issues.
Can I have some help please?

Node.js v19.7.0
[nodemon] app crashed - waiting for file changes before starting...
[nodemon] restarting due to changes...
[nodemon] starting `node app.js`
C:Usersxxx.xxx.xxxapp.js:14
    larry: Schema.Types.Mixed,
           ^

ReferenceError: Schema is not defined
    at Object.<anonymous> (C:UsersxxxDesktopxxxxxxapp.js:14:12)
    at Module._compile (node:internal/modules/cjs/loader:1275:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1329:10)
    at Module.load (node:internal/modules/cjs/loader:1133:32)
    at Module._load (node:internal/modules/cjs/loader:972:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12)
    at node:internal/main/run_main_module:23:47

Node.js v19.7.0
[nodemon] app crashed - waiting for file changes before starting...